Oh, SNAP! I just went through this too. I bought a beautiful maple top PRS in 2003 - it's always played great, huge sound acoustically, but every pickup I have tried in there, including the stock pickups, has sounded harsh.
I wanted something like PAFs, with a bit more gain, but without getting muddy or boomy. I was going to try some Suhr SSV and SSH+ in there but then I met David Allen at NAMM in January. He did me a deal on some custom humbuckers he was prototyping - 8.8K bridge and 8.38k for the neck.
(this model doesn't have a name yet, but tell David you're interested in the specs above and he will know what you mean).
I'm so happy with this guitar now! I use it in front of all the 65Amps that I own - all vintage voiced amps. It growls, it drives hard, rich harmonics without sounding shrill, it still has the ability to give you a chimey clean when you back it off. No matter what you do, the clarity is always there.
http://www.dallenpickups.com/
Check his stuff out - he's a new manufacturer and very customer focused. Pleasure to do business with.