My friend is leveling up a newly rolled druid. As his main is a Shaman, he plans to go into tanking for a change of pace (he was quite taken aback that my 62 bear form druid made a better tank than his 70 shammy, heh)
I plan to level up a priest with him (I have one that I parked at 29 so I'll probably just pick it up) but I'm wondering what spec would be best for leveling with a dps/tank - disc or shadow? AFAIK, both can do damage and heal in a pinch, so what really is the difference? Disc seems to be the preferred for arena - do they have more survivability?