Best Degreaser For Car Undercarriage: Practical Features for Easier Everyday Use

Best Degreaser For Car Undercarriage products should lift oil, mud, grease, and road grime while matching the surfaces and cleaning method you use. The strongest fit depends on whether you need clingy foam for frames and suspension parts, a ready-to-use trigger spray for occasional maintenance, or a concentrated gallon for repeated jobs. This roundup includes dedicated off-road cleaners, broad multi-surface formulas, citrus-based options, and a separate undercarriage protectant for finishing rather than degreasing.

Capacity also matters: 16- and 20-ounce sprays are convenient for targeted work, while gallon containers suit frequent cleaning or compatible sprayers. Always follow the label, work on cool surfaces where directed, spot-test unfamiliar materials, and use appropriate eye and skin protection.

The Best Degreaser For Car Undercarriage depends on the mess and equipment: P&S Mud Buster is the most specifically aligned with undercarriages, frames, wheels, and suspension, with foam, dilution options, and corrosion inhibitors. For broad vehicle use, 3D Grand Blast, Zep Cherry Bomb, or Oil Eater offer gallon capacity and multi-surface coverage. Chemical Guys Orange and 3D Orange provide citrus-based alternatives, while CRC offers a water-based spray-on, wipe-off formula.

Chemical Guys Bare Bones is a protectant, not the cleaning step.

Comparing the Best Degreaser For Car Undercarriage

Image	Product	Buy
Best Pick 1	Chemical Guys, Signature Series Orange Degreaser Spray, Heavy Duty, 16 oz Best for: Heavy Duty Spray Brand: Chemical Guys | Item Form: Spray	View on Amazon
Best Pick 2	3D Grand Blast Engine Degreaser – Heavy Duty Biodegradable Cleaner for Engines, Wheels, Exhausts & More – Fast-Acting, Non-Staining – Made in USA – 1 Gallon Best for: Engine & More Brand: 3D | Item Form: Liquid	View on Amazon
Best Pick 3	Zep Cherry Bomb Auto+ Degreaser & Cleaner – For Auto, Marine, RV, & Home – 1 Gallon Best for: Auto, Marine, RV Brand: Zep | Item Form: Liquid	View on Amazon
Best Pick 4	Chemical Guys Bare Bones Undercarriage Protectant Spray, 16 fl oz Best for: Undercarriage Protectant Brand: Chemical Guys | Item Form: Spray	View on Amazon
Best Pick 5	Zep Cherry Bomb Auto+ Degreaser & Cleaner – For Auto, Marine, RV, & Home – 32 oz. Best for: Large Volume Cleaner Brand: Zep | Item Form: Liquid	View on Amazon

How We Compared These Products

We compared dimensions, capacity, materials, compatibility, included components, and care requirements across many Amazon listings. These details matter because the product must fit the available space, intended use, setup requirements, and maintenance routine. After examining the wider field, we selected 10 products from Chemical Guys, 3D, Zep, Oil Eater, P & S PROFESSIONAL DETAIL PRODUCTS, and CRC.

The shortlist includes products such as Chemical Guys, 3D Grand Blast Engine Degreaser – Heavy Duty Biodegradable Cleaner for Engines, and Zep Cherry Bomb Auto+ Degreaser & Cleaner – For Auto. Every recommendation is tied to information stated for that specific product; unclear or missing features were treated as unknown rather than filled with assumptions.

Detailed Reviews: Best Degreaser For Car Undercarriage

1. Chemical Guys, Signature Series Orange Degreaser Spray, Heavy Duty, 16 oz

Best for: Heavy-duty engine and undercarriage cleaner.

Chemical Guys Signature Series Orange Degreaser Spray offers powerful, citrus-based cleaning agents that quickly break down tough grease, oil, and grime. This heavy-duty formula is designed for a deep, professional clean on engines, tires, and undercarriages, restoring surfaces with ease. It effectively tackles stubborn buildup for a thorough restoration.

This professional-strength engine degreaser spray is formulated with powerful citrus-based cleaning agents to cut through stubborn buildup in engine bays and on vehicle undercarriages. Its heavy-duty cleaning power dissolves tough grease and road grime on contact, restoring surfaces with ease. Suitable for cars, trucks, SUVs, and motorcycles, this 16 oz spray bottle ensures you have enough product for multiple applications, making it a go-to for maintaining a clean vehicle exterior and engine components.

Product Details

Pros

• Quickly breaks down grease, oil, grime, and dirt
• Heavy-duty, professional-strength formula
• Versatile multi-surface use
• Citrus-based cleaning technology

Cons

• Corrosive, causes serious eye damage and skin irritation

Ideal for car owners seeking a powerful, citrus-based solution for engine bays and undercarriages. Ensure proper safety precautions are taken due to its corrosive nature, making it best for experienced users who prioritize deep cleaning.

2. 3D Grand Blast Engine Degreaser – Heavy Duty Biodegradable Cleaner for Engines, Wheels, Exhausts & More – Fast-Acting, Non-Staining – Made in USA – 1 Gallon

Best for: Biodegradable heavy-duty engine degreaser.

3D Grand Blast Engine Degreaser delivers serious, heavy-duty degreasing strength to power through caked-on oil, grease, and grime. This fast-acting, biodegradable formula is safe for multiple surfaces, including metal, plastic, paint, and rubber, making it ideal for engine bays, wheel wells, and undercarriages without causing damage.

This professional-level formula is built to clean without causing damage, making it safe for use on metal, plastic, paint, and rubber components found in engine bays, wheel wells, and undercarriages. Its heavy-duty degreasing power tackles caked-on oil, grease, and grime effectively, reducing the need for excessive scrubbing. The 1-gallon size offers a concentrated, liquid formulation that provides ample product for extensive cleaning tasks on various parts of your vehicle, ensuring a thorough clean.

Product Details

Pros

• Powers through caked-on oil, grease, and grime
• Safe for multiple surfaces (metal, plastic, paint, rubber)
• Fast-acting and biodegradable
• Ideal for engine bays and undercarriages

Cons

• No specific cons mentioned in provided data

A great choice for vehicle owners needing a robust yet safe degreaser for engine components and undercarriages. Its biodegradable nature and multi-surface compatibility make it suitable for comprehensive cleaning tasks on various vehicles.

3. Zep Cherry Bomb Auto+ Degreaser & Cleaner – For Auto, Marine, RV, & Home – 1 Gallon

Best for: Multi-purpose auto, marine, and home degreaser.

Zep Cherry Bomb Auto+ Degreaser & Cleaner offers powerful degreasing action that quickly breaks down heavy oil, grease, dirt, and grime on contact. Its surface versatility extends to fiberglass, steel, chrome, painted metal, rubber, and concrete, making it suitable for a wide range of demanding environments and applications.

This high-performance, multi-surface degreaser is formulated to eliminate grease, oil, dirt, and grime from a wide variety of surfaces including fiberglass, steel, chrome, stainless steel, painted metal, rubber, and finished concrete. Its application flexibility makes it perfect for cleaning vehicles, RVs, boats, grills, appliances, garage doors, and shop tools with minimal effort. The 1-gallon liquid form provides ample product for extensive cleaning, ensuring thorough cleanup in demanding garage or workshop settings.

Product Details

Pros

• Quickly breaks down heavy oil, grease, dirt, and grime
• Versatile on numerous surfaces
• Suitable for auto, marine, RV, and home use
• Ready-to-use formula

Cons

• No specific cons mentioned in provided data

This degreaser is an excellent option for those needing a powerful, all-around cleaner for vehicles, boats, and home applications. Its broad surface compatibility makes it a versatile choice for tackling tough grime in various environments.

4. Chemical Guys Bare Bones Undercarriage Protectant Spray, 16 fl oz

Best for: Undercarriage protectant and trim dressing.

Chemical Guys Bare Bones Undercarriage Protectant Spray is engineered to bring wheel wells, fender liners, and frame rails back to a clean, factory-fresh appearance. This 16 fl oz trigger spray bottle is sized for show car prep and weekly maintenance, ensuring every angle of the build looks complete, including the underbody.

This plastic trim dressing is specifically designed for show car prep, weekly maintenance on lifted trucks and Jeeps, and fleet underbody refreshes. The 16 fl oz trigger spray bottle delivers a formula engineered to restore undercarriage components like wheel wells, fender liners, frame rails, suspension components, and exhaust shielding to a clean, factory-fresh look. It provides a show car underbody finish, ideal for enthusiasts who want every part of their vehicle to appear meticulously detailed.

Product Details

Pros

• Restores undercarriage plastic and components
• Provides a clean, factory-fresh appearance
• Sized for show car prep and maintenance
• Engineered for detailed finishing

Cons

• Primarily a protectant and dressing, not a heavy-duty degreaser

Perfect for detail-oriented car enthusiasts and show car owners who need to restore and protect the appearance of their vehicle's undercarriage and plastic components. It's best used after cleaning to enhance the finish.

5. Zep Cherry Bomb Auto+ Degreaser & Cleaner – For Auto, Marine, RV, & Home – 32 oz.

Best for: Compact auto, marine, and home degreaser.

Zep Cherry Bomb Auto+ Degreaser & Cleaner in a 32 oz size offers powerful degreasing action that quickly breaks down heavy oil, grease, dirt, and grime on contact. Its surface versatility extends to fiberglass, steel, chrome, painted metal, rubber, and concrete, making it suitable for a wide range of demanding environments and applications.

This high-performance, multi-surface degreaser is formulated to eliminate grease, oil, dirt, and grime from a wide variety of surfaces including fiberglass, steel, chrome, stainless steel, painted metal, rubber, and finished concrete. Its application flexibility makes it perfect for cleaning vehicles, RVs, boats, grills, appliances, garage doors, and shop tools with minimal effort. The 32 fl oz liquid form provides a convenient size for tackling specific cleaning tasks, ensuring thorough cleanup in demanding garage or workshop settings.

Product Details

Pros

• Quickly breaks down heavy oil, grease, dirt, and grime
• Versatile on numerous surfaces
• Suitable for auto, marine, RV, and home use
• Convenient 32 oz size

Cons

• No specific cons mentioned in provided data

This degreaser is an excellent option for those needing a powerful, all-around cleaner for vehicles, boats, and home applications in a manageable size. Its broad surface compatibility makes it a versatile choice for tackling tough grime.

6. 3D Orange Degreaser – Citrus-Based Car Cleaner for Oil, Grease, Grime & Adhesives – Water-Based, Non-Corrosive, Eco-Friendly, Interior & Exterior Use – 16 Fl oz

Best for: Citrus-based cleaner for oil, grease, and adhesives.

3D Orange Degreaser utilizes a powerful citrus-based formula packed with d'Limonene terpenes to cut through grease, grime, and oil buildup on contact. This water-based, non-corrosive cleaner delivers pro-grade results for engine gunk and sticky residue, offering multi-surface safe performance on a wide range of materials.

Packed with d'Limonene terpenes, this orange degreaser cuts through tough grease, grime, oil buildup, and even sticky residue on contact. Its water-based, non-corrosive, and eco-friendly formula is safe to use on vinyl, plastic, cloth, carpet, metal, and leather, making it suitable for cleaning everything from door panels to engine bays. The 16 fl oz liquid formulation provides a potent yet safe cleaning solution for both interior and exterior automotive detailing needs.

Product Details

Pros

• Powerful citrus-based cleaning with d'Limonene
• Safe on vinyl, plastic, cloth, carpet, metal, leather
• Cuts through grease, grime, oil, and adhesives
• Water-based and non-corrosive

Cons

• No specific cons mentioned in provided data

An ideal choice for users seeking an effective and safe citrus-based cleaner for various automotive surfaces, including engines and interiors. Its multi-surface compatibility makes it a versatile option for detailed cleaning tasks.

7. Oil Eater Original 1 Gallon Cleaner, Degreaser – Dissolve Grease Oil and Heavy-Duty Stains – Professional Strength

Best for: USDA approved biodegradable degreaser.

Oil Eater Original Cleaner & Degreaser is a powerful, concentrated formula that dissolves grease, oil, and heavy-duty stains from any washable surface. This USDA-approved, biodegradable, and non-corrosive solution is ultra-concentrated for efficient use on a wide array of cleaning tasks, from floors and driveways to automotive parts.

This ultra-concentrated, biodegradable formula effectively dissolves grease, oil, and dirt from any washable surface without harsh solvents or corrosive agents. It is USDA-approved for use at food service facilities, highlighting its safety profile. The 1-gallon liquid is ideal for cleaning floors, walls, driveways, grills, exhausts, automotive wheels, and parts. Its concentrated nature means a little goes a long way, making it an economical choice for heavy-duty cleaning needs.

Product Details

Pros

• Dissolves grease, oil, and heavy-duty stains
• USDA approved for food service facilities
• Biodegradable and non-corrosive formula
• Ultra-concentrated for efficiency

Cons

• Requires spot testing on less porous surfaces

Suitable for users needing a powerful, safe, and versatile degreaser for both automotive and household applications, especially where food contact is a concern. Its concentrated formula offers great value for extensive cleaning jobs.

8. P & S PROFESSIONAL DETAIL PRODUCTS P&S Off Road Mud Buster Foaming Cleaner – Heavy-Duty Degreaser for Undercarriages, Frames & Wheels – Tough on Mud & Grime, Corrosion Protection – 16 oz. Spray

Best for: Foaming degreaser for off-road undercarriages.

P&S Professional Detail Products Off Road Mud Buster is a powerful foaming cleaner with a high-foam formula that clings to surfaces, breaking down mud, grease, and grime fast. It is specifically designed for undercarriages, frames, and wheels, ensuring a deep clean after off-road adventures and offering corrosion protection.

This heavy-duty degreaser is designed to tackle the toughest dirt, penetrating and lifting built-up grime from your vehicle’s dirtiest areas like undercarriages, frames, and suspension components. The high-foaming formula clings effectively, allowing for maximum contact time to break down mud and grease. With 16 oz of product, it's ideal for ATVs, UTVs, dirt bikes, or off-road trucks. Corrosion inhibitors are included to help protect metal components, preventing rust after cleaning.

Product Details

Pros

• Powerful foaming action clings to surfaces
• Tackles tough mud, grease, and grime
• Includes corrosion protection for metal components
• Ideal for off-road vehicles

Cons

• Unscented formula may not appeal to all users

An excellent choice for off-road enthusiasts and owners of ATVs, UTVs, and dirt bikes who need a potent foaming degreaser for heavily soiled undercarriages and frames. Its corrosion protection is a valuable added benefit.

9. P & S PROFESSIONAL DETAIL PRODUCTS P&S Off Road Mud Buster Foaming Cleaner – Heavy-Duty Degreaser for Undercarriages, Frames & Wheels – Tough on Mud & Grime, Corrosion Protection – 1 Gallon

Best for: Gallon size foaming degreaser for undercarriages.

P&S Professional Detail Products Off Road Mud Buster, in a 1-gallon size, features a powerful foaming cleaner that clings to surfaces, rapidly breaking down mud, grease, and grime. It is perfectly suited for undercarriages, frames, and wheels, ensuring a deep clean after rugged use and providing essential corrosion protection.

This heavy-duty degreaser is formulated to penetrate and lift built-up grime from the most challenging areas, including undercarriages, frames, and suspension components. The high-foaming formula ensures it clings effectively to surfaces, maximizing contact time for breaking down mud and grease. The 1-gallon size is economical for frequent use or larger vehicles like off-road trucks. Corrosion inhibitors are integrated to help protect metal components from rust after cleaning, making it ideal for vehicles exposed to harsh conditions.

Product Details

Pros

• Powerful foaming action clings to surfaces
• Tackles tough mud, grease, and grime effectively
• Includes corrosion protection for metal components
• Economical 1-gallon size for heavy use

Cons

• Unscented formula may not appeal to all users

This 1-gallon foaming degreaser is ideal for owners of off-road vehicles, trucks, and ATVs who require a robust solution for heavily soiled undercarriages. Its corrosion protection and large volume make it a practical choice for demanding cleaning needs.

10. CRC Heavy Duty Pro-Strength Degreaser Spray – All-Purpose – 20 oz

Best for: Pro-strength all-purpose spray degreaser.

CRC Heavy Duty Pro-Strength Degreaser Spray is a versatile, water-based formula designed to tackle all your grease, grime, and oil stains with a spray-on, wipe-off application. This fragrance-free, unscented formula is easy to use, especially on plastic and painted surfaces, offering a convenient cleaning solution.

This pro-strength degreaser is a water-based formula that effectively tackles grease, grime, oil, and rain stains with a simple spray-on, wipe-off action. It features an odor-free, no flash, and no fire point composition, enhancing user safety. The 20 oz spray bottle is convenient for application on various surfaces, including plastic and painted areas, making it easy to clean undercarriages and engine components. Its multi-purpose nature allows for broad application across different automotive cleaning needs.

Product Details

Pros

• Heavy-duty, pro-strength cleaning power
• Spray-on, wipe-off convenience
• Water-based and eco-friendly
• Fragrance-free and unscented

Cons

• No specific cons mentioned in provided data

A practical choice for users seeking a straightforward, effective degreaser for general automotive cleaning tasks, including undercarriages and engine bays. Its user-friendly spray format and safety features make it suitable for routine maintenance.

What Buyers Often Overlook

Choose capacity and application format by cleaning frequency

For frequent undercarriage work, a concentrated gallon is more practical than a small trigger bottle, while occasional spot cleaning favors a ready-to-use spray. The Best Degreaser For Car Undercarriage should fit both the size of the vehicle and how you apply product. P&S Mud Buster comes in 16-ounce spray and one-gallon foam formats; its directions support undiluted heavy-duty cleaning or dilution for lighter jobs, with application through a foam cannon, pump sprayer, or trigger sprayer.

3D Grand Blast, Zep Cherry Bomb, and Oil Eater are also available in one-gallon formats, making them better suited to repeated coverage or compatible equipment. The 16-ounce Chemical Guys Orange and 3D Orange products are easier to handle for targeted jobs, while CRC provides a 20-ounce spray designed for spray-on, wipe-off use.

The trade-off is straightforward: small sprays reduce setup and storage demands, but gallons provide more working solution and may require separate dispensing or dilution decisions. Match the format to the areas you can safely wet and rinse, rather than choosing capacity alone.

The Key Product Trade-Off

Match the formula to surfaces and undercarriage failure risks

Surface compatibility and residue control matter because an undercarriage combines metal, painted parts, plastic, rubber, wheels, and sometimes exhaust components. P&S Mud Buster is purpose-built for undercarriages, frames, wheels, and suspension, and its supplied description identifies corrosion inhibitors as part of the formula. 3D Grand Blast lists compatibility with metal, plastic, paint, and rubber, while Zep Cherry Bomb lists fiberglass, steel, chrome, stainless steel, painted metal, rubber, and finished concrete.

3D Orange is water-based and lists vinyl, plastic, cloth, carpet, metal, and leather, giving it broader interior and exterior positioning but not the same undercarriage-specific focus. Oil Eater is noncorrosive, biodegradable, concentrated, and intended for washable surfaces, yet its directions call for cool surfaces and spot testing.

CRC is water-based, fragrance-free, and described as suitable for plastic and painted surfaces. Chemical Guys Orange carries explicit corrosive and eye-damage warnings, so handling requirements are especially important. Do not confuse Chemical Guys Bare Bones with a degreaser: it is an undercarriage protectant and belongs after cleaning, not in place of it.

Best Degreaser For Car Undercarriage: Buyer's Guide

Fit, Dimensions, and Compatibility

Compare the listed dimensions with the intended counter, cabinet, appliance, storage, or installation space. Confirm model compatibility and connection requirements where they are supplied. A useful feature cannot compensate for a product that does not physically fit or work with the buyer’s existing setup.

Capacity, Output, and Operating Format

Match listed capacity, volume, output, and operating mode to the actual household or work routine. Larger figures can support heavier use, while a smaller format may be easier to place and maintain. Treat daily output, immediate storage, and container capacity as separate specifications when the listing distinguishes them.

Materials, Construction, and Care

Use the listed materials and care instructions to judge cleaning effort, storage conditions, and compatibility with the intended use. Dishwasher, freezer, food-contact, or weather-related claims are included only when supplied for that product. Check whether routine care fits the way the product will be used.

Included Components and Setup Needs

Review the included components before planning installation or first use. Hoses, adapters, lids, paddles, bowls, brushes, controls, and manuals vary by listing. Confirm power, water, assembly, or accessory requirements from the supplied product information rather than assuming that separately pictured parts are included.

Value, Longevity, and Warranty Signals

Judging long-term value means looking past the headline feature and weighing the construction details that decide how long a product keeps working. Check the listed materials, the finish on moving parts, and whether the manufacturer documents care, replacement parts, or a warranty period. A product that is easy to maintain and supported with clear care instructions usually costs less to own over time.

Compare what each listing actually states about durability rather than assuming that a higher specification automatically means longer service. Where a warranty or support term is not supplied, treat it as unknown and factor that uncertainty into the decision.

Common Fit and Compatibility Mistakes

Most disappointing purchases trace back to a mismatch that was visible in the listing before buying. Confirm the exact dimensions against the real space, check that connectors, mounts, or accessories match the existing setup, and verify the power, water, or installation requirements that the product depends on. Buyers also overlook included components, assuming that separately pictured parts are part of the package.

Read the supplied specifications line by line and compare them with the intended use, because a feature that looks ideal in isolation can still fail if it does not physically fit or integrate with what the buyer already owns.

Which Should You Choose?

Choose P&S Mud Buster if your main task is removing off-road mud and grime from undercarriages, frames, wheels, or suspension; its foam, dilution guidance, application flexibility, and corrosion inhibitors directly fit that use. Pick 3D Grand Blast when you want a concentrated gallon for engines, wheels, exhausts, and undercarriages with listed metal, plastic, paint, and rubber compatibility. Zep Cherry Bomb suits a broad garage or vehicle-cleaning role, while Oil Eater fits users seeking a concentrated, noncorrosive, biodegradable cleaner for washable surfaces and parts.

For smaller targeted jobs, Chemical Guys Orange or 3D Orange offers citrus-based cleaning in compact formats; review their handling and surface guidance before use. CRC is a sensible spray-on, wipe-off option where water-based, fragrance-free cleaning and painted or plastic surfaces matter.

After cleaning and drying, use Chemical Guys Bare Bones when the goal is an underbody finish rather than degreasing. The Best Degreaser For Car Undercarriage is therefore the one matching your soil type, surfaces, application tool, and cleaning frequency.

Quick Buying Checklist

• Confirm the complete dimensions against the available space.
• Verify model, accessory, connection, and appliance compatibility.
• Match capacity or output to the expected amount of use.
• Compare materials and care instructions with the maintenance routine.
• Check the included components before planning setup or first use.
• Confirm listed power, water, storage, or installation requirements where applicable.

Frequently Asked Questions

How often should I degrease my car's undercarriage?

Regularly degreasing your car’s undercarriage is recommended, especially after driving in muddy or salty conditions. Aim for at least every few months or after significant exposure to road grime. This helps prevent rust and corrosion, maintaining the integrity of your vehicle’s underbody components and extending its lifespan.

Are all degreasers safe for car undercarriages?

Not all degreasers are formulated for automotive use. Some harsh chemicals can damage rubber seals, plastic components, or paint. It’s crucial to select a degreaser specifically designed for car undercarriages or labeled as safe for automotive applications to avoid unintended damage and ensure effective cleaning.

Can I use a degreaser on a freshly washed car?

Yes, using a degreaser on a freshly washed car is often beneficial. Washing removes loose dirt, allowing the degreaser to target tougher grease and grime more effectively. After applying the degreaser and rinsing, a final wash can ensure all residue is removed, leaving the undercarriage clean and protected.

What safety precautions should I take when using degreaser?

Always wear appropriate personal protective equipment, including gloves and eye protection, when using automotive degreasers. Ensure good ventilation, especially if working in a garage. Avoid spraying directly onto hot engine or exhaust components.

Read and follow the manufacturer’s instructions carefully for safe and effective application.

How do I apply degreaser to my car's undercarriage?

Typically, you’ll spray the degreaser liberally onto the undercarriage, focusing on areas with heavy grease and grime. Allow it to dwell for the time recommended by the manufacturer, usually a few minutes, to break down contaminants. Then, rinse thoroughly with a strong stream of water, ensuring all product and loosened dirt are removed.

Final Words

Selecting the right degreaser for your car’s undercarriage is key to maintaining its longevity and appearance. For heavy-duty tasks involving stubborn mud and grime, products like P&S Off Road Mud Buster offer excellent foaming action and corrosion protection. If a more general-purpose cleaner is needed, options like Zep Cherry Bomb or Chemical Guys Orange Degreaser provide versatile solutions for various automotive, marine, and home applications.

Consider the size of the container based on your cleaning frequency and the specific types of contaminants you typically encounter. Ultimately, a dedicated undercarriage degreaser will help preserve your vehicle’s critical components from the harsh elements of the road.

The right Best Degreaser For Car Undercarriage is the one that best matches these factors to your setup.