I'd like to know what has worked really good on top of PwC from you guys? I really would like to try some UPP because of the slickness, I'm just curious if I can put it on top of PwC, or will there be any sort of issues: bonding??? Will the carnuba in PwC effect the UPP in anyway? I know i'm gonna get some responses like: use Poorboys EX or EX-P, but i've been reading so many good things about UPP that I think its gonna be my sealant choice.