No idea on if it hits priests.

But for PvE I'd go resto shaman. Coordinated chain heals is sufficient for aoe healing and will go on pets definatly. And totems! Bloodlust/Heroism is imba too.

Basicly, I think a resto shaman is sufficient for healing, and adds more in terms of buffs then a priest could ever do.

Shaman all the way.

(I can't seem to vote. )