VP or DM. Although VP has the worst pull in the game with those stupid stars.
BRC is interesting...I've only killed one boss in there and it was the 3rd boss, the supposedly hard one. It's really nothing more than 2-3 stacks, rinse, repeat. The boss I found hard as hell was the stupid dog.
Surprised Grim Batol is so low. It took us 45 minutes today.
Still would like to try HoO.