I don't usually mix on my Beats, they're one of my many reference cans. I use ATH-M50's for the bulk of my mixing. Just gotta be wary of that low end they like to lie about. I hate headphones. Hate
Looks like the HD600's are quite popular, and the AKG's look damn nice for mixing / editing as well. The extreme isolation headphones might just be my choice for drummers.
As always, thanks for the feedback. The Sneap forums prove time and time again to be invaluable.