What don't I like? Hmm, very little, but:
1) The fact that the battery runs out very quickly. I now keep a charger at home, at work and in the car to prevent this from happening.
2) The newer iPod's controls (not the mini). With the four touch-sensitive buttons all in a row, it's difficult to find the right button when walking with the iPod on my belt. With the old buttons, it was a no-brainer.
3) At 30 GB, I've already filled it.
