Depends what you want to do. Lots of people put their whole catalog on them at a very high quality, so 60 gig is nice. I can get by with 2 gig myself. I can put 100 or so songs on at CD quality bitrate which works great. I am constantly swapping out songs on it so the lower memeory works fine. I usually only listen to 5-10 different artists at any one time and then when I'm tired of them move on to somebody else.