My McCartys have the following pickups:
* Rosewood #1 - VHIIs. I had spare VHIIs from a sold guitar lying around, and thought I'd try them in this guitar. The stock pickups were a bit dark here, and as the wiring had been changed anyway I thought I'd try a pickup swap. I liked them so they stay!
* Rosewood #2 - Holydivers. I bought the pickups used to compare to VHIIs, as I chose between the two originally and the HDs lost. To be honest, a small part of the reason for buying the guitar was to fit the HDs in it :oops: I'm glad I did, as it sounds great! This guitar had also had some wiring changes so I didn't mind swapping pickups here either.
* Korina - stock McCarty pickups. Sounds lovely as standard so I'm leaving it alone.
* 'Regular' McCarty - non-BKP boutique pickups to be fitted in the near future. I ordered some 'special' pickups a while back with the intention of turning this into my "Les Paul". As standard, it sounds very thick and a bit muddy.
As you can see, three of my four McCartys have had pickup changes for various reasons. The stock ones sound pretty good for blues stuff, but a bit unclear for the heavier rock stuff I play with Doppelganger.
Something you may want to do to brighten the guitar up a little and remove some muddiness is to switch it to 50s wiring, rather than modern. You can see the change here - the pre-2007 guitars have modern wiring, the current ones have 50s......
http://www.prsguitars.com/csc/schematics/schem08/mccarty.pdf