Resto do have some escape tools but none of it matters anyway if your under geared any dps will kill you easily. H pally seems to have the most survivability in the gearing stages but that's my opinion. A geared h pally is also tuff to take down.
Originally Posted by Validity
If rogues become shit, all they can become is a different type of shit.
Shamans and Paladins are the top arena healers by far. Even with the silence nerf it is extremely hard to burst down a team with a competent resto shaman, provided the shaman has people who are good at peeling melee.
Mistweavers pale in comparison, I've never seen them do anything interesting in 3s once people learned to stop stunning them. They are getting buffed in 5.2 though.