This is not a one is better than the other issue.

Each method offers it's own unique benefits and features. Machines like rotary buffers, dual action polishers, and orbital buffers are simply tools. Depending on the surface condition and what you're trying to accomplish, one may be better suited for the task over another.

Back when traditional paints, like lacquers and enamels were used at both an OEM factory level and in the refinishing industry, the average person with average skills could perform all of the common detailing procedures by hand and get really good results. This is no longer true in light of today's modern, catalyzed base coat/clear coat paint systems.

Modern paint technology, generally speaking, is much harder than traditional paints and requires special buffing pads and chemicals to remove defects where just a decade or so ago, a can of polishing compound, a rag and some elbow grease could accomplish the task satisfactorily.

While hand application of Meguiar's paint cleaners, cleaner/polishes, pure polishes and waxes can achieve brilliant results a majority of the time, professional painters and detailers prefer using a machine such as a rotary buffer, dual-action polisher or an orbital buffer for a number of different reasons.

Here are a few:

• Depending on the procedure, machines are nearly twice as fast as your hands.
• Machines are much less fatiguing to your hands, arms, and back.
• Dual-Action Polishers and Orbital buffers apply a thinner coat that's easier to wipe off.
• Dual-Action Polishers and Orbital buffers spread polishes and waxes more evenly, for more uniform results.
• Machines do a better job of cleaning deeper and removing surface defects and oxidation more thoroughly.
• Machines are better at removing swirls.
• Machines force more polishing oils into the surface, for deeper gloss and reflections.
• Machines are more effective at removing serious defects than your hand.

Either of the two power buffers Meguiar's offers mimic your hand motions and will give you an impressive finish without any risk of burning your paint, even if you've never used a buffer before.

It's important to remember that while a rotary buffer can do a lot of good, it can also be dangerous, potentially creating swirls, or burning through paint if not properly used. Using a rotary buffer correctly requires skill, good technique, and experience. Don't expect or even try to learn how to use a rotary buffer on any vehicle that is important to you. Instead, find an old junker, or go to a wrecking yard and find the hood off a junked car to learn and practice on.