I like the convenience of use of my Wadia 170i - I replaced my Reimyo 777 CDP for a Wadia 170i/Reimyo DAC combo (that happens to be exactly the same DAC of my Reimyo 777 CD ) and.... I do not miss the CDP at all.
Caveat - I use a quite expensive Siltech coax cable from the Wdia to the Reimyo to really get closer enough to my original digital source.
Saying that - it is not as convenient as having either a Mac or an AppleTV as digital storage the Wadia's emote has very limited functionality and the iPOD screen is far away from my listeining chair to really see what is playing.
and... do not forget that only WAV files are acceptable for proper reproduction.
Regards,