Im basically looking for a build/profession/spec that's able to enter in a fight and burst down an enemy, while also been able to get out of there as quickly as posible(conquest mode, no WvW). I was wondering about thief, but i want to use the same character to do fractals, and as far as im concerned thief is the worst profession to do so. I tried ranger, but i find it quite boring at least in pve.