I got my hands on some severely neglected Audi wheels and figured this would be a perfect time for a direct comparison of Adam's Deep Wheel Cleaner and Sonax Full Effect. I let each dwell for an equal amount of time and then agitated it with a boar's hair brush. Sonax Full Effect Adam's Deep Wheel Cleaner In my opinion, the performance was identical. There were some embedded particles on the wheels that neither cleaner removed. I was pressed for time and was only able to allow each of the cleaners to dwell for a little over two minutes. I think a longer dwell time might have put a larger dent in it, but I dont think anything short of claying would remove it completely. However, I would give a slight edge to Adam's because it smells better, but other than that the price point is almost identical with Sonax at $0.5914 per ounce and Adam's at $0.6246 per ounce.