I just bought a Shuffle, it's a great, cheap, small, light player for cycling. I don't need a screen, let alone a colour screen, when I'm cycling; all it does is suck battery capacity. Then again, I may be the odd one out, because I don't particularly need buttons, either, on a Shuffle: just turn it on and it shuffles songs. I would have been fine with the previous generation Shuffle, too.
Every non-apple mp3 is cheap and small, can (obviously) shuffle your songs, AND has the ability to navigate and choose the one you want. And did i mention it's cheaper?
I really can't understand why people buy the shuffle... It really needs to go!
The nano, I can understand just because of the touchscreen. But even with that, it's too expensive compared to any other mp3. I mean it's triple the price for the same features. Oh yeah not the same features, it has a really (...not) useful touchscreen. Which can't even play videos! ! !