+1 for 85 in the bridge. I just swapped the bridge 81 in my esp m-ii with an 85. Basically sounds like somebody took the cotton out of my ears, its great! More clarity and richer harmonics. Want to try it the neck, but swapping pickups is easier than changing strings on this guitar.
Before i did my 18v conversion on my 81's i did a recording, and then another directly after,same settings and everything. The difference between the 2 were completely inaudible.