thank you! really appreciate the thoughts/insight. End of the day, in my untreated room, with glass and high ceilings, any good amp will probably do the trick =) who knows...maybe ill just run a 6700x and call it a day with one device........
Have you use the online calculator to figure out your power need yet? The 6700 may be okay if you sit close enough and don't get too close to reference level. Regardless, get yourself at least on Infinity fan to put on top of the unit. If you don't need 13 channel, such as 7.1.6, why not just go with the 4700 that measured very well on ASR, or consider the Yamaha CX-A5100.
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NAD AVRs did not measure too well on ASR, I think the only advantage it has is Dirac Live, but in my experience, Audyssey XT32 can do an excellent job in the 20 to 200 Hz range, I don't believe Dirac can do any better, just different. That's base on my graphs plotted using REW. In terms of which sound better, it is a highly subjective matter. Aside from Dirac, with NAD you would pay more for less..just my opinion.