I don't care to promote any companies products, but when they work, what the hey. I've tried just about every polisher/buffer out there and most of them are better suited for grinding up concrete or making filings out of metal. The "Random Orbital", sold by Griots Garage in my opinion is the best one out there for the do-it-yourselfer and I can attest to it being fool proof
. I was very impressed with how it brought back a 20+ year old paint job. It actually made me think I knew what the heck I was doing. Give it a look...I believe you can view the DVD on-line. It's used with specific pads and polishes. Below are a couple of pics so you can see what the stuff looks like.