http://www.youtube.com/watch?v=7sJnPrhn3bU
Trivium Guitar Gear
Matt Pups = Dimarzio D Sonic in Bridge, Air Norton in Neck
Corey Pups = Seymour Duncan Dimebucker in Bridge, '59 in Neck

Dream Theater Guitar Gear
Petrucci Pups = D Sonic In Neck?

Metallica Guitar Gear
EMGs both ways