Vitality or Magic Find?

Heh, you may have noticed how I built high magic find (~100%) into my items set. Of course it comes with a sacrifice of some other useful stat, mostly vitality in my case (i.e. it is extremely hard/expensive to find  items that have both intelligence, vitelity and magic find).

However since I'm playing on hell, sometimes I'm getting in trouble with rare monsters that kill me waaaaay too fast. Thus I have secondary item set in my bags, which has about the same damage stats, but replaces magic find with vitality. If I wear all those items on, I'm suddenly a 38K health mage with 5700 damage and 22% magic find! 

Impressive, huh? However even that much health often not enough on Hell (lvl 57), so I'm planning to build alternative sets. Things to try stacking: crit chance/crit damage, armor, resistances. 

What's your items priorities?