I have my entire library (1100 CDs) ripped and archived in ALAC so that I can play them across my AirTunes network on my stereo. While there are better lossless formats it works with iTunes, AirTunes, iPod and has nice tags embedded in its container. Now I want to create a separate library for my 60GB iPod. It is not essential that I can store absolutely all the tracks on my iPod though that would not be a bad thing either. What format do you wise people recommend that I convert to? AAC? Some sort of MP3 VBR? Something else? Obviously, audio quality is very important. Future portability outside of the Apple realm is not so important as I do have the lossless file archived and there are a number of apps that will convert these to any other lossless format that I may need in the future. Obviously, for now I want to be able to play these lossy files on an iPod and in iTunes from my MacBook when I am on the road. Any recommendations on which app to use? Do some do a better job of conversion than others?