You seem to know a lot about pickups. Not sure if you have any experience with LTD H's, but they aren't very dark despite being mahogany, because of their maple necks w/ 25.5" scale length. What'd be good for tight riffing in thrash and metalcore fashion with some black metal treming thrown in for S's and G's? I was thinking of trying another Duncan [I'm using distortion's now and they aren't doing what I want really], like an invader or custom. If not that, I was looking at GFS Crunchy Rails, BLUSA L500XLs, Dimarzio Dactivators and Xs. What say you?