Originally Posted by
Totaltotemic
Haromm's > TED > AoC, but a higher ilvl AoC > lower TED, this is true for every fight.
For gear, anything that doesn't have Mastery is good, and everything with Mastery is bad. This of course means the best tier pieces are legs and shoulders, however if you can't get both in heroic you can use the gloves because they don't have as many stats as chest or helm so you lose less by taking that piece with mastery. 4 piece is okay and slightly better than equal ilvl off set, but if you can get warforged non-set pieces they're better than the 4p bonus.