P21s is typically an LSP and should be applied last. It's very easy to use and buff off. I usually let it sit to a haze for about 30 seconds and wipe off.

 

It's not as deep and reflective as some of the other expensive waxes like Clearkote Carnauba moose wax or Souveran, but for the money it is a very quality wax. Check out autopia for a review on it. I also believe that it was a #1 rated wax by some market research firm. P21s is pretty much the same as S100 which you can buy at any Harley Davidson store for like $15.

 

I like the way P21S looks on my twilight blue, reflective and deep at the same time. It certainly doesn't have the "bling" look like some sealants though.

I have a shipment of Zaino products coming in to see if they compare to a carnauba/concours wax look. I hear nothing but good things about them.

 

I use s100 (the motorcycle version of p21s) and it's great. The directions state just wipe on and off; no need to let it sit and haze. I apply it to one panel (or even half a large panel) at a time and then just wipe it off with an mf towel. takes about 20 minutes or so to do the whole g35.