Product Comparison: Meguiar's MT300 vs PORTER-CABLE 7424XP

General Specifications
About the Product
The MT300 Professional Dual Action Polisher is lightweight and ergonomically designed for comfort and ease of use to minimize user fatigue. The MT300 with Digital Torque Management (DTM) is a digital instantaneous feedback circuit that increases torque when downward pressure is applied to maintain loaded speed levels. And with an OPM (orbits per minute) range of 3000 - 7500, it has the most versatile speed range in its class. Other features include easy side-port access for quick brush changes‰ÛÓsimilar to most professional rotary buffers
Ideal for polishing and sanding automotive and marine projects, this 6 in. Variable-Speed Random Orbit Polisher features a 4.5-amp motor for high overload protection and random orbit. Compact and lightweight at just 5-1/2 lbs., it delivers professional, swirl-free sanding/polishing action with an electronic variable-speed dial to select 2,500-6,800 OPM.
Key Specs
Random orbit
Orbit Rate
7500 opm
6800 opm
Wheel Diameter
6 in.
What customers say about "Key Specs"
Meguiar's MT300 Dual Action Variable Speed Polisher
  • So far I like it very much. The variable speed is nice and the 5 inch pad with the velcro attach is nice.
  • This Meguiar’s polisher is a great tool, offering variable speeds, dual action, soft start, and seemingly limitless reliability.
  • I adjust the speed to all recommended settings for what I'm doing. This rocks. Takes me half an hour to do my RAM 1500 crew cab
  • Nice little polisher but loud and vibrates at high speed. I'm going to use this polisher for waxing at low speed.
  • This this is not worth its price. Used it 3 times over the last year and now the variable speed no longer works making this useless. This is my second Meguiars DA polisher.
PORTER-CABLE 7424XP Variable-Speed Polisher
  • The adjustable 6 speeds makes a huge difference. I highly recommend this if you're someone that puts a lot of time and effort into taking care of your own vehicles
  • I like the variable speed. I can easily change it with a little thumb action. I learned the hard way to start off slow and then select a faster speed.
  • The PorterCable Random-Orbit Polisher is one great polisher. The variable speed is a plus. No fear of "burning" through the paint with this unit. You can hold your hand against the head of this unit with no danger to your skin, amazing.
  • Great economical buffer for car detailing. Variable speed is great, power is complaints.
  • The random orbital is much better than a circular polisher for applying and removing wax and polish since it will avoid burning the paint. This Porter Cable RO polisher is very well made, solid and powerful.
  • Speed adjustment wheel is annoying. I really don't like that feature. Would make a lot more sense to put the dial where it can be reached by the thumb on top while buffing.
  • While using the mechine it vibrates so bad it makes my hand go numb and is extremely loud!
  • The porter cable is a very reliable machine but it lacks power and it can take a very long time to remove swirls and scratches.
Size & Weight
4.9 in.
6 in.
17 in.
14 in.
6.1 in.
6.5 in.
5.5 lbs.
5.5 lbs.
What customers say about "Size & Weight"
Meguiar's MT300 Dual Action Variable Speed Polisher
  • It is relatively light weight for what it is. It is built well, and looks easy to maintain.
  • The unit is not to heavy and is easy to maneuver around with.
  • It is lightweight enough, easy to handle and store.
  • Only dislike: very heavy and pads can fall off once in a while.
PORTER-CABLE 7424XP Variable-Speed Polisher
  • The balance and feel on this is perfect for cars. The size is not too big, and the power is more than adequate.
  • This polisher did the trick. It's a perfect size and weight, I've never used a buffer before but this it was easy to use.
  • This machine is light weight and easy to use.
  • Easy to carry and the weight is perfect for one handed use.
  • For hard polishing it can be light enough.
2 Position Side Handle
Spindle Lock
Variable Speed Trigger
Rubber-Coated Handle
Spindle Thread
5/16 - 24
Digital Torque Management ensures proper torque to maintain load speed level, Multi-Position D-handle improves comfort and control for optimal user preference, Billet counterweight with Multi-Bearing Design ensures smooth, precision balance with increased durability, 8mm throw optimized for compounding, polishing and waxing on both large surfaces & in tighter contours
Random orbit, swirl-free sanding/polishing action, Accepts 5/16 - 24 spindle thread accessories, Includes 5" proprietary counter balance for use with 6" sanding/polishing pad, Features two-position (left or right) removable side handle for greater comfort and control, 100% ball and roller bearing construction
What customers say about "Features"
Meguiar's MT300 Dual Action Variable Speed Polisher
  • The digital torque load management and ramping startup speed is different than a regular buffer or grinder, but actually part of the magic of why this polisher effectively buffs/polishes yet with little risk to paint, corners, edges, or trim.
  • It even comes with spare brushes which can be quickly changed.
  • The slow start allows you to start cutting or buffing without splattering around the compound or polish.
  • The handle is adjustable for the angle you want to hold at.
  • Thing sucks, i dont know if mine is defective but it vibrates more than it spins. and its lowest setting for me spins way too fast, so i cant get it low enough to control it.
PORTER-CABLE 7424XP Variable-Speed Polisher
  • The speed control is excellent and comes with a very long cord.
  • The 12 speed settings (1-6 at 1/2 increments) make this polisher so dynamic and great for any project. With the right product & pad combination, almost any paint defect can be removed.
  • I like the feature of the variable speed control and ability to change side of the polisher handle. Also is really quite quiet.
  • If you apply too much pressure it will stop rotating and just vibrate. This is a great feature so that you don't burn through the paint but it doesn't allow for easy paint correction.
  • Only comes with one buffing pad. Hard to find anyone that carriers buffing pads locally.
  • Sometimes it can be tough to remove the polisher tools with the provided wrench. There is not much space between the tool and polisher.
Power Source
Power Output
4.5 A
4.5 A
Warranty / Certifications
Manufacturer Warranty
1 year(s)
3 year(s)
Other Information

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