I grabbed some S100 at the local mortocycle shop, which from forum discussions is basically the same thing as P21S. I wanted a really nice carnuba for the first few waxes and it seems to do a really nice job. It's also very easy to work with.

Anyone have opinions on S100/P21S?

 

Love it, just make sure your surface is cool.

 

Yeah, I noticed that if it's a little warm or you leave it on too long, it's really tough to get off.