I was thinking about replacing the pickups in my PRS Custom 22 (love everything else about the guitar, but pickups are the PRS Achilles heel it seems). I have made up my mind that I want BKs, but not sure which to pick. I play the PRS mainly (along with some beat-up Strats) into a Guytron GT-100FV, a Matchless Chieftain, and a Fender twin, with few effects. Basically, I am looking for good range in tone. Sweet, detailed clean tones with lots of headroom, through nice blues grit to high-gain classic British and American rock. I don't like super-bright or dark tones or massively distorted death metal gain. I dig humbuckers with some authority and high output to drive the amps. Balance, warmth, clarity, sustain, and balls, with good "stringiness" (don't know how else to put it). I've enjoyed listening to the clips. The Nailbomb was monstrous, but not exactly my cup of tea. Based on the descriptions, I was thinking of Mules, Black Dogs, or Crawlers (or a combo thereof). What would you recommend? Also, are there any possible problems with installing the new pickups into the PRS switching system?