I've used the wheel one... all I can say is ehh.. It polishes pretty well, but it is still alot of work (at least for the shape of the wheels on my mustang). Screw the paint one. I don't think its worth the risk of ruining your paint, because they do collect dirt, and there is a metal rod through the center that attaches to a drill. Cotton towels are great for wheels, and microfiber anything is great for paint.