After seeing the demo of the Porter Cable and Blackfire polishing system on My Classic Car recently I bought the kit and also got an additional $45.00 off. I have a red cars, one black and a black HD. I have used all the so called polishing compounds and black wax kits that go on by hand. After having my paint guru polish my 07 Black Mustang GT and not get the results I anticipated, I figured it was worth my $ to try this on my own. I used my HD rear fender as the guinea pig surface since it was scratched from years of packages and a few "chunky monkey" passengers rubbing on it. A few passes with the SRC and the difference was unbelieveable. Swirls and scratches were gone. The polish and sealant finished off the transformation and a coat of Blackfire Caranuba was the cherry on the sundae! Im hooked and will be a fan and customer for some time to come. Black '07 Gt; Red '89 GT and '79 Corvette.