I know it could be a personal preference, but in theory which is closest? Currently, I have ripped all my CDs and stream them wirelessly through the AX to my Onkyo TX-SR608 and Paradigm Titan speakers. I do listen to CDs, but most of the time it is streamed. I have a rather large library that I originally ripped into MP3, but want to re-rip and get the best possible quality - and file size is not a concern for me. I can always buy more HDDs. I have ripped into both for a test and they sound the same to me, but that is with my current equipment. I want to be able to insure the best I can that when I upgrade my stereo that I will not regret the format I chose and feel a need to re-rip everything again.