I am pretty disappointed with my shuffle. It does not randomize well, and the responsiveness of the buttons is not very good. Size wise it's amazing, but not having the ability to select your music will really effect you if you have wide music tastes. I have Marvin Gaye, Aphex Twin, Rage Against the Machine, Fiona Apple and Led Zeppelin on my ipod in addition to many more, therefore when i go to the gym any of those artists may come on, which really kills the mood. It would be one thing if i only listened to rock or electronic but when Bulls on the Parade follows, "i heard it to the Grapevine," no matter how much Apple tells you the shuffle always manages to pick the exact song you wanna hear, that is dead wrong. I just bought another ipod so i will fill my shuffle with rock, rap, and hip-hop and it will only make the journey out while im at the gym or going biking/snowboarding but besides that i wanna be able to select my music for the day. So if you have varying tastes and think you will be listening to a wide variety of music then you may want the nano. Pick depending on your usuage but do not think that having a varying mix of music will lead to you being happy with the song the shuffle picks, if you don't mind clicking next song often then go for it, but i kinda like knowing the next song in a playlist or at leat knowing the music is going to be from the same century, decade, era, or genre. Good Luck!