As of 8/28/2016 I feel I am done for now.  System is so resolving, no combination I've had before has ever sounded like this.  The ZU Omen Def's with Radian Tweeters and Audio Research amplifier is just amazing at how every musical track is laid bare. 

System Edit: 02/02/2017 swapped out the Audio Research 300.2 for some lovely Quad Elite QMP mono blocks.  Absolutely thrilled with the price to performance ratio.  Excellent build quality, very robust power supplies, 45 lbs each.  Overkill power for ZU's, damn straight!