I have a PK bridge in a PRS Singlecut, and its certainly (oh yes) powerful, agressive with (when played that way) a beautiful and sweet tone ... under gain. The clean sound is good, but not "great" IMHO, but then I do have wired straight to the Jack :shock:
Do you play your cleans off the neck mainly? The PK bridge is definitely what you want for those under-gain tight aggressive drop tunings, and you could consider another, Alnico, neck pickup to go with it? A Cold sweat neck maybe.
The PK neck is ceramic I think (I don't have one) so perhaps is a little less sweet on the clean channel than some of the other choices out there, but like I say I don't actually have one :(