I'm playing a Demon Hunter and right now I am in love with Twin Chakrams.
I'm also playing Demon Hunter, but I've only found 2 usable weapons so far (played for 1 hour 30min), so currently with a very sub-par crossbow.
For teaming with my mates, I was thinking of playing a Witch Doctor simply because they seem they'd be hilarious when they've got all their summoning abilities equipped. But a build like that would suck quite a lot in solo.
My one and only gripe with the game so far? People skipping event/boss scenes.
Going through solo for the cut-scenes/etc, when I go through with friends we're probably going to skip them.
I honestly don't see what's so great about it. And judging by the metacritic score (3.4/10), neither do most other people.
There's been a lot of hate over the servers being unprepared. The game itself is really nice, just people aren't being given a chance to try it out, so they're raging over it. People are also complaining about "bad graphics", which is a ridiculous thing to say, the game looks fine.