Briefly played a McCarty (traded it like a fool, sigh...), and I had two different bridge pickups in there at different times.
First, I had the SH-5 Duncan Custom which blended beautifully with that guitar.
Full, bold tone but not harsh or overwhelming. Loved it.
Later I put a 59 Custom Hybrid in there because I loved it in another guitar and wanted to split it for more tone versatility.
Worked really good as well, though I found myself not really utilizing it as much as I had thought I would've and probably could've kept the SH-5.
At least when I traded it, the Hybrid pickup was still in there, I kept the SH-5 and threw it in another PRS and put it to good use.
A buddy I was jamming with at the time also had a McCarty that he had the Suhr Aldrich in and it sounded quite good as well.