First off, welcome. I'll only talk about the pickups I've had experience of, but there's plenty of people around who have played em all, so my take is by no means definitive.
Holy Divers are a bloody good old school heavy rock pickup, very clear and articulate with loads of harmonics. Not ultra powerful, but enough (my bridge has a 15.5k output, the neck is 7.7k).
If you're after something with a bit more kick, the Nailbomb (which I used to own) is great - seriously powerful, tight, clear with very good harmonics, while remaining fairly uncompressed.
For a cr@pload of power, there's always the Warpig - huge power, quite a compressed sound, incredibly tight with massive harmonic potential, but also cleans up beautifully (and still has a fair old kick when coil-tapped).
Hope that helps a bit, or at least provides something of a kick-off to the discussion. It might also be worth mentioning some of the bands/artists whose stuff you play so the recommendations could be narrowed down a bit. All the best, Si
