This won't answer your question but I am looking to buy a new processor next year.
Your post struck me b/c I have the B&W 804's and I want to get the best processor I can afford to attain the BEST sound from my B&W's.
I never thought of nad until now, so thanks for the thought.
I am currently running my system with the Outlaw 990/7700 combo.
Home Theater B&W803D,HTM3S,DS7,Mitshubishi HC6800,Da Lite screen,Outlaw990/7700, Fathom 110, Furman Elite,Comcast,Oppo 93,APPLE TV, 2Channel B&W803D,Bob Latino's m125 tube mono-blocks,Grace Design m920,TIDAL,Oppo93Cables/Nakamichi, Monster, BJC, Audio8