Great feed back, thank you!
Our room is just under 3,000 cu. ft. and we sit right at 12ft from the L/R channels. We don't play movies terribly loud but I'm known to crank up 2ch from time to time. That should give some editional overhead to the NAD plus I plan to bi-amp the H3's since we are only in a 5.1 setup. I also just checked my existing speaker wire and realized it's only 16ga. Between the better pre/amp section in the 777v3, Dirac, 12ga bi-amp wiring, Dirac and break-in I should see a nice improvement over the current setup (which already sounds really nice).
I'll just stick with the NAD and make any decision based on how the setup sounds, plus I might be better served playing around with speaker setup. Currently spaced about 8 feet apart and 6 inches or so off the wall, no corner loading. My current sub sits next to my left channel 4ft from corner, I'm going to try and hide the new sub in the corner so that may drive me to add more spacing between L/R channels.
Thanks again for the great feedback