Greetings fellow guitarists who know more than me about pickups. Hoping you nice fellows can help me out with some advice... I've got an Ibanez 7421PB (Poplar Burl top/Mahogany body, Jatoba fretboard on a Maple neck) and I'm looking to replace the stock Quantum in the bridge with something much better/bitchin'/awesome yet within a reasonable price range (hopefully less than $100). Not looking to replace the neck pickup primarily because (A) I don't use it that much and (B) I'm not looking to spend the amount of money that a set of two new pickups will cost. So I'm just replacing that bridge humbucker for now. Looking for a nice "drop-in" replacement fit as I'm not looking to do any routing on this guitar. I don't want to be in the middle of an installation only to suddenly discover it doesn't fit. And I'm not sure how to know that in advance (that's where you smart dudes come in). I'm guessing this might rule out something like an EMG 81-7, but I don't know. I'm looking for something to create awesome metal tones, brutally heavy yet articulate clear notes with no muddy aspects. Saw the Seymour Duncan 7-string comparison vid by Keith Merrow and while I thought they all sounded pretty great, I noticed lots of comments saying the SH-5 Custom was best. Anyway, just looking for recommendations. Any and all advice is welcome and thanks in advance.