Do these really work, they seem to go against everything I have been taught. It just looks like they would induce swirls real easy. I want one because I have a truck and can't reach some areas of it. So before I shell out 100 bucks for one I wanted to ask the experts. Now I know without proper washing techniques you can scratch your finish with the finest of materials. So with that said if I take every precaution possible are these brushes safe for my finish, and which one is the best to get. Thanks
Jason
Jason