For small buff jobs it really doesnt matter what the brand of 'buffer' you use ...
Whats really important is the 'quality' of the buffing pads and the quality of 'compounds' you use. The 3M 'knobby foam' pad is probably the very best to fill this need.
3M Perfect-It Foam Polishing Pad 05725
... requires a special under pad and arbor.
You usually dont have to recoat before power buffing, only to fill the dings, etc. with the coating before rebuffing.
Usually all you have to do is wet flat-sand with upwards to 2000 grit, then buff with a knobby pad (needs special buffing under-disk and 'arbor') then use 3M Finese-it™, change to a new clean knobby pad, and then use 3M Perfect-it™.
If you need to remove 'waves' (lightwave different surface elevations) for 'supreme' flatness, then use 3M "DryGuide Coat Kit" during the flat sanding process.
This is how its done on the 'perfection' buff-out and to produce a mega-gloss finish on ultra/mega-yachts, private jet aircraft, mega-expensive musical instruments and 'concours quality' automobiles, etc. .... even when such surfaces are 'just' freshly coated. Its called 'finishing', a lost art.