i´ll go as wonz said.. have been 3 boxing with my pallys, but im now adding one enhancement shaman to my team. I have been able to 3-man all instances with this team (major problem is Zul farrak, because mobs spam too much totems). Adding 1 more toon will make things easier and, as a shaman, i can respec resto and 4 man heroics (i think so lol).