The most widely used random orbital buffer used by the enthusiast is the Porter Cable 7424 or the 7336SP (7336SP sold at Lowe's for $109 with a 6" fixed plate foam polishing wheel and a sander plate). If you want to be hardcore, go to "properautocare" and purchase a 5" eurethane velcro disc backing plate for $16.95 and their 6" velcro attached pads (different color pads used with different polishes/compunds depending on paint condition). Remember a random orbital polisher is best used to properly work the polish or compound into the paint. It is not used for buffing off the polish, applying the wax, or removing the wax. It can be done for those items I just mentioned, but if you use a quality product there is almost no residue to buff off. A 100% cotton towel or microfiber towel is much better in removing residues. If you are going to apply a one step cleaner wax a buffer is not worth it. If you are going to do a 2 step process (polish/wax), the random orbital buffer will work the polish into the paint much better and easier than by hand.