At great risk of this being a worn out topic, I recently hired the local franchisee for this system (L.A.) to take care of the chips on the nose of my black '03 E46 M3. I had my doubts. There must have been over a hundred chips (some micro size) from the nose to the lower bumper. Quite frankly I am very favorably impressed with the results. He charged me $100.00. My only other option was to repaint the hood and bumper $750+). I ordered the do-it-yourself kit and will give it a try on another car. I'm convinced that the late model BMW paint (water based?) is much more vulnerable to rock chips compared to earlier models.

I've wanted to try this out for awhile...let me know how your DIY goes