I am using the Iceshard Dagger - it is the best I have seen so far. It has a weapon enchant slot and does more damage than the founder pack epic. Off hand I is the Capitans dagger.
For me it is a tough call as i want one of my encounter powers to be the hard hitting single target damage, so that is why I am in limbo of what 2 aoe encounters I will use.
What they need to do is for the boss fights somehow show who did the most damage to the bosses - that way you get a more accurate picture if one class needs a abuff or a nerf.