My buddy loves WW barb and is now excited for S12. What should I play to compliment him pushing HC 2-man GR?

I am pretty open to most classes. I am leaning towards Monk or Crusader. Monk has the nice SWK WOL build, and I can go zDPS as well.. but Crusader has the option to gear share as well, which is really nice. I assume Condemn is the best build this season?

We aren't looking to be #1 or anything, we just want to be competitive on the Leaderboards. And I want him to play WW the entire time, because its the most fun for him.