I'm in the same boat..
I am trying to determine how far people have gotten in inferno difficulty, I am having serious issues in Act II? I have a witch doctor; the character is doing 45k un-buffed and 65k-70k buffed. For some reason I am getting one-shotted by just about everything (not sure if Blizzards intention was just to have players run through; not attacking anything, but that has been my initial reaction); I have spent millions on gear and really have not found a working solution.
I'm in the same boat..
The worst thing now is my gear repair (even if I don't die), it seem to be 11k a repair and 25k if I die.
i thought this was just happening to me ive got a wizard ive gotten to the point of almost giving up on beating ive been stuck in act 2 for a while now.
Act 2 is the most painful Act in Inferno imo.
Try to solo siege breaker on act 3 .. Still able to slay it in 5-8mins time
If you're a witch doctor, actually any class you need all resistance and health. It doesn't matter if your damage is 15k, trust me survivability is much more important since the cost of repairs have skyrocketed with 1.0.3. I have 3 accounts up to 60, I finished everything on my demon hunter with a nat set but act 3-4 is one shot even with 500 ish all resist. My barb has 1100 all resist, 50k health, 1.1k armor, and still have a tough time in a3. Get a weapon with socket or life on hit of atleast 300 can seriously help with champ mobs with reflect. Good luck with beating Inferno Diablo.
Act II was a complete turn off for me. I started to dislike the game until everything lined up and I had gotten a pair of Tri-fecta gloves that sold for 65mil.
I had purchased 40mil in gear for my Demon Hunter and STILL I could not get past act 2! Eventually I started to give up, but then I corrected my gear a bit, raised my DPS to over
100k with Sharp Shooter and then I could finally do Act 2 - Act 4, obviously with a Barbarian help.
I managed to solo Seigebreaker, Azmodan, Cydia, Izual and Rakanoth.
I personally know that Demon Hunter are glass cannons, but I've seen some Witch Doctors with high res & high health hiting 50-100k. As said before Res and health will be one of the main things your going for.
Got done with Inferno on the first month of release.. just had to farm a lot. Too get past act 2, basically get a lot of resist. My monk with 1500 all resist with only 10k damage was able to solo the whole act 2.