Originally Posted by
Machismo
For leveling, I'd go:
Prot Pally
Resto Druid
Fire Mage
Fire Mage
Destro Lock
Of course, the number of mages playing will plummet significantly, so it will simply be a matter of what you can get. the difference between groups won't make too much of a difference over time.
As for max level, prot pallies with strong aoe classes are all that matters. Locks at 70 can explode multiple packs with a few spells. If they play it right, you can have multiple locks who target tertiary mobs with their SoC, so that they don't pop until several are on different mobs. With practice, you can make it so any tank won't lose aggro, because the mobs just go from 100-0 in a flash.