I've got an 4GB iPod Nano which I use a lot while travelling, working out, etc.

Also got an old 20GB iPod 2nd (or 3rd?) generation. Which lives in my car permanently and therefor the battery's gone all useless (heat and cold kills the battery). But it serves very well hooked up to the stereo in my car.

But yeah - I'm one of those iPod nuts. If I wanted a new mp3 player I would choose an iPod again over any other cheaper brand .