My gf is playing a witch doctor, and I have yet to decide what I'm going to play.
I have all but the wizard leveled to 60 on softcore so i know how both the monk and the barb play like.
I have put far more hours into my monk so part of my thinking with rolling a barb is to have something a little more fresh.
My main issue with rolling a barb is that I wasn't much of a fan of their rage generators (bash, cleave, frenzy). But I love some of their other abilities like leap and also felt that they had a bit more interesting resource spending abilities.
So what would synergize well with a WD? Are monks able to use some interesting abilities like inner sanctuary in hardcore? Do you prefer a monk or a barb? Does one have more viable builds than the other?
It's highly likely that I'll end up leveling both but what are your opinions on it?