I have a Wizard in Act 2 almost to Kulle fight, but ya... kinda getting distracted by Dragon's Dogma (and enraged by lag deaths )
Lanien, prolly shoulda stuck with WD I think. WD can dominate inferno with many builds and not the best of gear more Wizard nerfs inc and ya... unless you have really awesome gear you will die hard.
My characters are all very undergeared for the progress they have made. I think that has been my problem on my WD. So far with Wizard, I have coasted though, planning on finishing out hell tonight.