Re: BEST METAL PUP, yeh againe ?
Full Shred for me. Why? I've never heard another pickup that crunches and chugs like the Full Shred. Tight, defined and chunky. It gets even better in a set neck or neck-through guitar!
The Custom's not bad either. I've had mixed luck with it. Had a TB-5 in one guitar where it didn't work so well. That was my Robin Medley with ash body, maple bolt on neck, rosewood board. I couldn't get pinch harmonics to happen, and for metal you definitely gotta have pinch harmonics! However, I put a Custom in my Hamer Studio and I swear it sounds like the rhythm tones on early Iron Maiden albums.
I don't have a Screamin Demon, but I've got one guitar that has a Li'l Screamin Demon. It's got a great singing, sustaining lead voice, and plenty of crunch on power chords.
There are a variety of metal guitar sounds. Are you going for a tight, chunky 80's metal tone or a loose, swampy Godsmack/Staind/modern metal tone? Or something else?