I use an Porter Cable orbital buffer and Príma products. They have some really awesome products and are locally based in Colorado which is how I found out about them. They have 3 levels of polish and an awesome wax, and all their products are water soluble. I used their stuff from friends beater cars to a Lamborghini Gallardo. I have some pics, I just have to dig them up. But for now here's a link:
There stuff isn't horribly priced and is (IMO) better than the stuff you get at any department store (mothers, turtle, etc.). They also have a broad range of products, not just paint care, but interior. They have this stuff called Nero for plastics, rubber, and vinyl that is amazing and smells like bananas.
I think I've used these pictures before, and I have to admit I can see some swirls. These pictures were taken a couple years ago and I had to dig them up, I wish I had some better ones.