well my fury warrior with an enhace shammy and feral druid and all in blues was >= all casters and yes warlocks with over 1k shadow damageincluded in a gruuls fight even though i had to dodge things all fight and watch my agro I was 1% less then our epicced fury warrior but since dw got moved i dont know anymore locks clearly are op for dps but ive seen some mages/boomkin do some good damage but ive yet to see a rogue do all that much they're common and for all ive seen cant keep up the damage a fury warrior in blues used to be able to.  SO my answer is warlock/fury warrior