I had an absolute blast playing 4x warlocks in the 70 bracket. The 80 bracket is a bit frustrating still since we start out at the disadvantage and the alliance just streaks down to the bottom.

My favorite is sneaking in behind the alliance at galv. I had several rounds of setting back their whole team with just my group of 4.

I'll be playing again at 80, hope it's still as much fun. There is always wintergrasp, I've seen some truly crazy numbers there.