We are currently in act3 NM. Got pretty far, but after a death to some crazy champions (or whatever they are called now) we decided to repeat act 3 and level up a bit before we continue. Surprised how much exp we still get, after 1 repeat of act3 (and not even all the way to the finish) we are already lvl 49 and still gaining very quickly.
We will continue to act4 after server is up :)
So how are you guys going? Anyone in hell yet? :) Would be very interesting to get some stats too. I've got about 25k life and 1500dmg as a monk.