I have one of the "older" 5GB models. I wish it had an FM tuner and I wish it supported Ogg Vorbis file format... But those are just wish list stuff that Apple may or may not put into it

.
More realistically; the battery life in mine seems to be much better after the last firmware upgrade. It used to be that if I'd gotten down to 2 dots on the battery, it would just dump within seconds. It doesn't do that anymore. A removeable, rechargeable battery would be brilliant! Don't know why Apple hasn't done that yet

.
Ok, I'm rambling now... I guess there isn't much that I don't like, or have trouble with

. I need a larger one though, as my audiobooks take up a lot of the 5GB. I'd go for the 15GB, if I had the money to buy today. Been reading about too many problems with the 30GB model...