Oh shit I just remembered from your comment that they were releasing a new d3 that is basically the patched pc version. Is that what you are talking about?
Are you on ps4 or xbox one?
I'm worried for Microsoft on the master chief halo release being so close to destiny. But from everyone I've heard on the subject, they still can't wait for master chief collection and still plan on buying it....I'm up in the air on it, I guess I'll have to see if destiny is still tons of fun at that point.
I liked he barbarian because you regen health based off attacks or something iirc. You also have some abilities which allow you to handle sticky situations well...IE: lots of bad guys, or difficult bad guys. I remember dying the least on my barb, and running through dungeons quickest. Barb might be a good class to try if you have beaten the game, or want something faster paced.
Demon hunter was good for taking time and being strategic. You can place traps down on the ground which do a wide variety of things such as slowing enemies down.