[Perfectlap]

S100 is the big competitor to P21s.
P21 significantly raised their price this year and S100 is still $15 a jar.
Both are 100% Carnauba.
S100 is a little softer than p21s and from what is said, is better on metallics.
Both are great on Black. If you click on my signature you can see my Black Miata which had only P21s. It added sparkle to the 10 foot deep Klasse reflection.
All my toys get the excessive layering of Klasse SG. But once you add the Carnauaba topper you can no longer layer the acrylic Klasse.
In between monthly S100 layers I use Sonus Carnauba spritz, works fantastic.

p.s. I just used Meguiars NXT on the wheels and the lower egdges of the body work. Brake dust and road debris wipes right off.