Thanks for your reply. Paladin has also got Devoition aura - If improved +1,2k armor for all party members , blessing of sacrifice wich takes a 100 damage from the pet to the paladin and ofcourse paladin healing is the most mana efficient of all healing. Paladin could literaly flash of light 1-2 hours without drinking , assuming they have a good MP/5 and some nice crit chance on their heals.

Druids only have Hots and entangling roots outdoors
Shaman have totems.. but they also have ankhs to resurect themselves.

So far i think i wil choose a priest , since paladin is a melee character wich makes him harder to box togheter with a hunter. Also taking priest i might take 2 night elves with shadowmeld and also have some good advantage looking at BG and arena in the far end.