Within the last year I went through a test of pickups (Duncan Distortion, JB, 59, Pearly Gates and BKP Holy Diver Calibrated set) from the recommendation from my son and the guitar that I wanted to put the pickups in (he has a lot of experience with Bare Knuckles) around the '80s I use the Distortion as my goto pup. I tried all of the pup's mentioned but the HD was by far the best (for me) After testing them in my home studio level, live & recorded the HD has so much tone possibilities, just by lowering the gtr volume, they sound warm and almost '70s mid-rock (Single Volume/5-way mega type E/ No Tone Pot) and both HD Pickups sound wonderful, the neck sounds just as "Vocal-Like" as the bridge. I feel the JB sounds very good at Full-Open but looses tone and definition as you turn down the volume control, whereas the HD stays nice and vocal-authority through all of the volume control range, excellent sensitivity to pick attack.
The BKP Holy Diver's are awesome pickups (the Hand Scatter-Wound makes a great difference).