I tried P21S this evening on my wife's white Accord. The Accord has a layer of AIO that was applied about 2 weeks ago. After washing the car, I decided to try out P21S since I have been using Paste Glaz as a topper on my Passat, I was curious about P21S. It was easy to apply, a little less oily that Paste Glaz, however P21S required a bit more effort to remove with a MF towel that Paste Glaz does. I found some smears after using an MF to remove the P21S and used Quik Shine to remove the smearing. In the morning light tomorrow, I will see how the P21S looks. As far as ease of use, I prefer Paste Glaz but if the P21S lasts longer, that will be the final word. Since the car is white, I'm not sure that P21S will look much different from Paste Glaz.