I used to play a resto druid.
any class is amazing if played well, but it wasnt for me.
resto druids feel more like a bg healer rather than arena healer, due to the fact that all he has is to heal, he cant cc, silence, etc.
but you do have to be resilance stacked, and with all cds poped, itl be pretty hard to down a resto druid.
bg healer? not arena?
druid cant cc right, druid can root time to time, druid can, sleep the shamans and other druids, bear stun, bear kick, druid can dispell prot gays and dont let em get AP enrage from the prot spec shit, he can break vanishes and dont let the rogue stealth, he dont even have to cast anything against against mages or under the rogue, he can never run oom, never, he can heal any damage taken, he cant die, he can ALWAYS escape.