i had duncan custom custom pickup in bridge position and i must say, i quite liked it~! As other people have mentioned above it has a lot of midrange and quite a smooth sounding also very neutral and organic =). description from duncan web page says it's alnico 2 magnet, 17k.. erm... i found it quite low output pickup and lack of punch. Holy diver is somewhat dark sounding pickup, and I don't think it would be a good replacement for duncan custom custom. I would say rebel yell is way to go because it's quite a bright pickup, have tones of mid, and punch and clarity that was missing from duncan. although i got myself a miracle man to replace SD11 :roll: