IMO the best dps classes are the ones that never run out of wat they need to dps i.e. rogue warrior warlock
warrior not as mush as warlock and rogue but yea when i go into gruuls we bring a fry warrior

also in gruuls highest 4 dps goes as folos
1: Affliction Warlock
2: Combat Sword Rogue
3: Destruction Warlock
4: Fury Warrior

these are the usual listings tho the other day when we downed him fire mage took number 2 spot so i geuss they r good as well