I really am starting to feel like the focus on SINAD has caused some to lose the plot. Fact of the matter is that 100dB SINAD is the "doesnt really matter anymore" point. In most domestic environments on speakers, it probably comes far sooner than 100dB purely due to noise floor.
Surround processors are all about the features, and Trinnov has the best-of-the-best room correction. Nobody else I'm aware of has anything like their
Optimizer/visualization setup. Let alone the 2D/3D remapping stuff that lets you change the apparent location of speakers. I don't think I could ever spend quite that much on a processor, but I understand why people buy these.
And I also really think we've reached the point where features are more important than performance in most DACs. If you gave me a choice between a $500 DAC with 120dB SINAD, and one with 100dB SINAD+a good headphone amp+Dirac, I would consider the first unbuyable and the second an unprecedented bargain.