The UPP is pretty nice. I used the new Sonus Blue pad to apply the UPC, and the Sonus Black pad to apply the UPP.
I like the UPC, it isn't as strong as MPPC. It did a nice job of removing wash- and dry- induced marks.
For me, UPP's appearance is very similar to MPPP & #20. It has that same clean look. It's no Souveran or #26, though, and not as "wet" as NXT. It might be a ss red thing.
S100 doesn't look good at all on my car, it's all reflection and "silveriness". Collinite is the same way. Neither one lets the red be red. The first time I used the S100 I was really pulled in by the silkiness and softness, but the next morning when I looked at the car I thought, "ugh". I tried it once more, and felt the same way. I gave the first jar away, bought a second jar, tried it again, and now I'm trading it away.
Tom