Thanks Eric.
In my view, the thing about most PRS is that the electronics, including pickups and wiring are quite good in comparison to those in Gibson. My LP Custom sounded ok but I was missing that bit of bite on the bridge. I bought a Seymour Duncan JB and it was too much output and out of balance with the stock neck pick up so I changed for Classic 57 at Neck and Classic 57 plus at bridge and it really improved the tone. The problem was that I wanted a more versatile sound and have more options in terms of wiring (out of phase and coil spliting) so after some research I order a balanced set of these combo (Mule Neck/Riff Raff Bridge) and they work very well.
Not sure if I would change my pickups on the PRS though, they do sound amazing but again, I will never know if I do not try it. Do you have any clips of your McCarty with the Riff Raff?
Cheers,
G