Best Audio Format for Apple I-Pod

Both AIFF and Apple lossless have the same resolution, they should sound the same. Since Apple lossless takes about half as much space. I would go with Apple lossless.

With the iPod lineout to a Musical Fidelty X-CAN v3 I have not been able to tell the difference between 320kbps AAC and Apple Lossless. I encode everything in Apple Lossless now as it's basically a perfect copy of the original CD. I rarely use the iPod headphone jack except on 'planes.

One problem I think is to do with the size of the Apple Lossless files is that the iPod freezes every now and then (rendering it useless until the battery runs out). I think that because of the larger files the hard disk needs to be respun more often to refresh the buffer and this operation is error prone in bumpy situations like walking, running or on 'planes. It never freezes listening at work in the cradle.

That is what I use (Apple lossless). I also use the Total bithead with it too. I have the 40g photo. I filled it up with about 3000 songs and no photos. :-)

Apple Lossless - no doubt! By the way: I just bought my first AND LAST CD (Brian Wilson "SMiLE") in iTunes store: the music is ACC encoded (!) and when I compared the download with the original CD - GEE was I shocked! ACC (or mp4 as they call it) might be OK for the car, or for listening while doing home chores but not for serious listening.