Howzat
I'd Rather Be At The Hideaway
PS is iconic stuff. Adds a warm glow to bright colored and light cars. Durability is not fantastic, and the price is high, but its solid. If you want to stick with a Carnuba, try P21S, which is fantastic (similar to PS, but was a bit less expensive).
I have been fairly disappointed in the PS. I think I will try the Four Star UPP when I use up the stuff I have.