I have 4 Lesters loaded with calibrated sets of BKPs. I use amps that typically enjoy a lower/modest output pup. For what it's worth, I gotta say the most character rich with biting attack and immense overtones in the mids would go to the Black Dogs. These can do all types of music, and they sound distinctive, rich, and warm - but very biting.
I've also got Emeralds, MMs, RRs, Nailbombs, etc. For my Lesters, the BDs for the aggressive style of playing are by far the sweetest.
Hope this helps.
V.