Hey guys, I'm buying a Nano today. Just wondering whether anyone knows if the sound will be greatly improved by buying better earphones? Or are the included ones good enough (in my experience so far, earphones included with MP3/CD players are pants). If so, which would you recommend? I'm not an audiophile, but if I can improve my listening for relatively little expense I would do so. My music is encoded at 192Kbs AAC, if that's important. Thanks!