Resto: Neither can kill the other; infinite (almost) mana on both sides, and both sides have crap damage (SL/SL Lock)

Feral: You'll get feared into oblivion.

Balance: Lol...try casting when you have increased 60% cast times, as well as an anti-magic pet on you (he can dispel roots off himself and silence you, also causes pushback).

Your best bet is probably Feral.