Ya I also vote arcane mage. My PvP team is Priest, Druid, 3xMage and I spec all mine full arcane/fireblast and my favorite thing about this build is my opener: Arcane power, Arcane blast, PoM Arcane Blast x3 mages. This is a very good chunk of frontloaded damage but the best part is theres no travel time and theres no missle tracer for anyone you left alive to use to find you. Anything else that gets in my way eats arcane missles x 3 just long enough for anyone that proc'd missle barage to get the full cast off then fireblast. With Amissles auto facing you and doing missle barrage speed damage i have enjoyed this group. granted I have a priest and druid for healing the squishies through the occasional rogue that knows how to wipe my whole team.