I've only had one non-mixed team (first team, the favorite Prot Pally, 4 shammy) since then I've had 4 different mixed teams (all ranged, I've not had much success mixing melee with range). I enjoy the mixed teams more. Easier for loot, fun to have them compete against each other

Having said that!!! I've fallen in love with Survival Hunters, and am seriously thinking about lvling 2 more hunters (Pandas anyone!) along with some monks, with the goal of forming a Blood DK, Disc Priest, 3x Survival Hunter. **Side note, I lvled from 80-85 in less then a weekend last weekend (started friday night, was 85 Saturday night, and I had a full 8 hours sleep in there to!, without RAF, but with Guild and all Heirlooms).