Both the Miracle Man and Warpig are sometimes thought of as "EMG killers", putting up all the heat and gain of 81s and 85 (I forget which is more like which) but with the vibe of passive pickups.
The Miracle Man is the shredmeister, and has great definition at high gain. It does use a ceramic magnet (in the bridge) for that, so though it's very tight at gain, it won't clean up quite as nicely as an Alnico pup would.
The Warpig has a similarly insane metal output, but geared more towards brutal low-end chug. With an Alnico magnet, it's not as tight and defined as the Miracle Man, but it cleans up very well (check the clips!).
If you want to shred, go for the MM; to thrash/chug, use the 'Pig.
There are also a few lower output BKPs, either ceramic or Alnico depending on what you want, that are voice for metally things of one kind or another (I wonder if the now-in-development Painkiller might work for you?).
In case of doubt, mail Tim @ BKP :)