None in my opinion! I've read all the reviews and they coincide with my experience with the NAD T175 -- there simply isn't an HDMI processor on the market that I know of without any problems (popping noises, hdmi handshake, etc.). Bet best is to pick up a used Onkyo Integra DTC-9.8 for about $800, and wait for something like the NAD M15HD to start showing up on the used market. I personally just bought a NAD M15 and am going to use analog outputs.
Maybe some people could tolerate operational quirks better than I can...
Maybe some people could tolerate operational quirks better than I can...