Michael at Showroom Auto Detailing does all his own work when it comes to paint correction. This settled me because I'm very picky with my Bimmer and don't just let anybody touch it. It may take a while to complete the detail, but it gets done to perfection. My Bimmer was just so swirled from many washes (it's black) but when I came to pick it up it looked better than the day I bought it. Even was given a free loaner car(Ford Explorer) to use while my car was being transformed.