I seen many posts on these pickups and they don't seem to be as popular as the nailbomb or warpig but these pickups are frigging great.
Slightly less output than the Dimarzio Air Zone i had in the bridge position. Picking dynamics shine through alot better and when playing legato phrases you can even hear your fingers accent certain notes. Even though the output isn't as high as the Air Zone the Holy Diver sounds 'heavier' much more 'chug' in the sound. Reminds me of John Petrucci's kind of sound.
Haven't wired the neck pickup correctly yet so i'll edit this post soon to give a short review of the neck position.
hooooly diiiiver!

Edit: forgot to add that they really clean up well when turning the volume down a bit.