What BKP does exceptionally well, is all their custom options. I'm a simple guy, I like gold covers, cream coils, and sometimes an etch here or there.
I have tried every BKP under the sun. Here are my thoughts.
Stormy Monday: amazing PAF pickup. Clean, clear, warm, yet very transparent. Nothing fat about it. Just lush. Think, Seth Lover.
Mule: quintessential PAF. Think Pearly Gates meets '59. Not as raunchy as the Pearly, not as honky as the 59.
VH2: hotrod PAF that sizzles. Love it in the neck, by the way.
Black Dog. Not my thing. Sounds great (think Custom Custom + A2Pro in the neck), but just too broad for my taste.
Holydiver: JB/Jazz set, but without that annoying uppermid spike of the JB. As if the JB has had a facelift.
Cold Sweat: crunchy and biting in the bridge, fluid clarity in the neck. Insanely good. Reminds me of the Pegasus in the bridge and the Sentient in the neck if the Sentient had an alnico II.
Juggernaut: totally its own thing. Unique. Tight, clean, clear, very even sounding. I HATE this pickup with a passion.
Silo. JB/59 set, but without the honk of the 59 in the neck, it is way clearer and more even. The bridge silo reminds me of the JB but is not as brazen as the Holydiver and yet retains that upper mid spike but not nearly as harsh as the JB. Silo is great, truly.
Crawler. HOLY SMOKES this pickup is cool. It's like a Perpetual burn in the bridge and like a pickup that holds the middle between the Jazz (clear, clean, open), and the A2Pro (some fatty roundness in the top end). I know that the jazz and a2pro share all but the magnet but I don't have a better way to describe it.
Emerald: thick, fat, crunchy. If a Snickers-peanutbutter bar was a pickup set, it'd be this.
Ragnarok: Think 'Black Winter' set but more polished. Not as sizzling as the BW.
Riff Raff: PAF but with a ton of bite and bark. I think this pickup is great in a LP, not in an SG. Too harsh.
Nailbomb. SD Custom5 comes close but the Nailbomb is bolder, fatter, tighter, more chunky in the low end. The neck pickup is fat and creamy.
The rest I tried but didn't like enough to register mentally.
OH, the Polymath! Oh that set is the perfect allrounder. It has brightness but not too much, it has crunch but not so much it becomes sizzling. It's just a great allrounder and a joy to play.