Just bought my wife the 30G Ipod 5G and found the sound to be "better" than my 40G Ipod 4G. Any thoughts? I ended up updating my 4G ipod software in the process of installing the new itunes that shipped with her unit. Not sure if that did something???? Was really surprised that the identical mp3 sounded better on hers. I actually had BOSE headphones on mine and the generic headphones that ship with ipods on hers. Keep in mind the mp3 is physically the same one (from my library)!