How bright/dark is the natural voice of your PRS?
I tend to recommend the Abraxas too, because that is closest to your description, however if your is your PRS is on the brighter side I dare to suggest the Crawler too. Mediumoutput, still PAF-pedigree there, huges tones, big mids, more round topend but chimey enough for most guitars so it cuts enough, growls like a bear when pushed, solonotes keep weight above the 12freth and they blossom beautiful with some ampdrive, cleans up and splits great. Splitted you get a tele-esque tone. Neckpickup is warm, but your could opt for a Mule or an Abraxas-neck.
The Abraxas is a good option. It's a hotrodded Mule with a tad more compression, less topend and a bit more mids. Still airy enough when you like Mules (which are one of my fav BKP's). You could define the Crawler as the uber-Abraxas. Both tend to very well in PRS's. Both have excellent noteseparation, dynamics and stay clear with loads of gain. But that's a BKP-trademark.
I have the VHII in ash strat, so that's not really comparable to a PRS. It's a punchy, noncompressed, focussed pickup that you really can steer with your pickattack and volumeknob. When you dig in, it can really scream. It's a great rockpickup, yet imo not as versatile as the Crawler. Also a little dry compared to the Crawler. I like the VHII best with medium to highgain.