Just beat the final boss tonight on my Wizard, it was funny that it took me no time at all to burn through all the bosses before him and then when I get to him it takes me three times to get him. I don't think I was using the right combination until the end when I started throwing energy shield in there.
Trying Monk now, I played a DH till lvl 18 and I didnt like it. I've played a Wizard, Barb, and Monk to that level and they all seemed to be just pure badass and the DH, maybe I wasn't using the right skills, just wasn't powerful in my mind. I didnt like the fact that I couldnt kill many things before they got to me without having to caltop and vault away. With my Wizard I could burn things down, even without Disintegration Beam, before they even got close.
Looooooooved Act 3, I actually felt like I was the baddest mofo on the planet killing every demon in the battlefield without a sweat. I know it wont be that way on Nightmare, but I got archon a little before Azmodan, holy shit gg Azmodan, don't bother showing up next time.
