> M4a sounds so vastly much better - to me - than MP3 and WMA now that I can > often tell which type of file I'm listening to in a couple of seconds, and > MP3 and WMA just bug the heck out of me quite often. M4a absolutely never > sounds lousy to me.
without knowing bit rates, constant vs. variable bitrate encoding, etc, it's not
useful to compare two encodings.