I tried an experiment on my Super Black 350Z - any other color use whatever you want ... black is always the hardest color to work on. I have over $300 spent on a Porter-Cable random orbiter, every Zanio product made, a half a dozen micro-fiber towels, a de-ionizer and every swirl remover made by the big manufacturers.
I did a side-by-side-by-side triple treatment on my hood and saw zero difference between the Zanio and a much cheaper NXT product. There was no difference in wear over the months since the application. I upset a whole bunch of people at My350Z.com but the truth is the truth. I still buy Zanio products but they're not "all that".