I decided to try the Clayzilla today for the first time instead of using my clay as I normally do. Now I have 2007 Black Chevrolet Impala and at first the clayzilla appeared to causing some sever streaks but once I did a quick wipe down of the area I just worked I have to say I was very impressed with a mirror shine and very clean. I grabbed my normal clay just to see if I could tell any difference and I will say the clayzilla worked just as well as the clay. I am hesitant to say it was actually better but I will say I was impressed and it was much easier to use at least for me than working with the clay. Just like the clay the surface has to be kept lubricated and it is much better if the surface of the car is at a cool temp instead of a hot surface.