Well after all i'll start my Hell progress, seems like i get as much exp from Hell Act 1 than in NM Chaos, and there are not so much Mana Burn... Mana is serious issue right now.
I'll try to update this topic as much as possible and also take S/S from all Rare / Unique drops from Hell. So far my luck have been poor what comes from drops

Bishibosh

Coldcrow

Blood Raven

And btw seems like there are no immunities at Hell

?