my BIGGEST audio regret was choosing flac over apple lossless (damn you, audiophiles!). why? there is NO difference in sound but if you ever ever ever use anything apple (itunes, iphone, ipod, whatever) apple makes it damn difficult to use flac. not impossible but a giant P.I.A. and, of course, the opposite is not true - most other non-apple music players/devices will play nice with apple lossless files. because apple sucks and how people ever got the idea that it is microsoft and not apple that is the evil corporate empire i will never know.