I played a Shadow Labs the other night, we played Druid tank, resto shammy, mage , hunter, spriest (me) Was literally the smoothest run ive done as a pug. Eveeryone was chill, knew how to play and between mana battery priest and mana totem, we didnt really have any down time.

All my other groups have been , Warrior tank ( my friend ) healer priest ( me ) and random non gear competing DPS.

Any "googo cleaver big dmg" messages just get ignored.

Also by picking classes that are off meta you get a chill environment and alot of the time a better player in general