Originally Posted by
Dossou
In my experience selling Challenge Modes 2H Frost is preferred to DW, especially if you're playing with a good tank and other strong AoE classes.
Many people often overestimate the importance of AoE in CMs. Tanks should be doing most of the AoE damage if you're pulling correctly for speed.
As 2H, just reforge haste>mastery>crit for CMs. Your single target will be virtually unchanged and your AoE will be slightly stronger.
As for weapon, the Sha Gem is disabled so the preferred weapon is a socketed one from ToT, the haste/crit random sword is the best but anyone will do to be honest. As for gemming you should stick with Str gemming as haste hasn't really been viable to gem since around 485-495 ilevel.
Strength food.
Set bonuses are also disabled so just stick to well-itemized pieces with lots of sockets.