B Standard was what divine heresy was tuned to, and is also my favorite tuning.
i prefer 12-56 for this tuning. in all actuality i prefer one guitar strung with a lighter gauge for tracking solo's in the tuning and another with thicker strings and a brighter wood combination for tracking rhythm for the aggressive mixing attitude.
Whitechapel has always tuned A from what i can recall. Graves of valor, Rose Funeral, early All Shall Perish, As blood runs black, Emmure, Heaven Shall Burn (my avatar), Suicide Silence, etc.
most of the reason for having any scale length longer than 25.5 has nothing to do with intonation and everything to do with decreasing string gauge without sacrificing tension. by giving a more loose feeling for vibrato and also more tuning stability you also gain the added benefit of larger fret area on the neck for upper fret access.
I think one of my personal favorites right now is As good as dead, tuned B standard:
If you have a 7 string, the guitar is tuned to E standard with a B as your 7th string. if you have a 6 string you will have to drop the E to a B and this is where the entire guitar has to be rock solid and well setup to handle the added tension/stress of larger gauge strings. i use 11's for C, 10's for D.
IMHO this is where laying your strings on the fretboard actually hurts that aggressive attitude, you lose alot of attack and articulation in your right hand by trying to go for the lowest action possible. that works great for solo tracking and comfort, but you will get more mids, more resonance, and much tighter rhythm control with the action raised to a medium comfort level on your guitar.