Dark/Electric/?Epic?

[DemonWithin]

Id like to start by saying.  This may be my favorite build period.  Anyway on to my question.  My dark/elec build already has  soft cap defence, good damage resist, decent recharge. But very low damage.  But that is other poeples job.  My tactics are to drop Darkest night jump in the middle of the mob and drop some short circuit. Then more AOE. By the second Short circuit the mob should be out of end and pretty well gimped.  Question is.  What epic do i take? I'm leaning towards fire, the nice melee attack and the AOE.  But I do like the sphere that  comes with the world of confusion power.  My true question is this.  I currently have world of confusion but it does not seem to actually confuse any targets.  Can anyone attest to the effectiveness of the defender set world of confusion power?  Also, any other comments on defender epic powers would be nice.