I've got a Lundgren M6, which I find a bit boring. It's competent, but nothing fancy.
Dimarzio Tonezone which is killer for a mid-focused sound.
Nelson single coil which is rad.
Alumitones which I don't dig at all - not enough output and it was hard to balance them with treble/bass and get a sound that worked clean and distorted, so these aren't in any guitar at the moment.
Stock Duncan Designed whatevers in my Jackson, which are surprisingly great.
I dunno, I just like the sound of an electric guitar with a bridge pickup - neck just doesn't sound right to me. But I don't like dark sounds on a guitar, and the neck feels too smooth. Not enough bite.

I really want to try some Seymour Duncan Black winters - they seem pretty killer.