i do a lot of driving at work, so the cd player is my mp3 player ... i find that ear buds and chords and somewhat delicate/expensive devices can either be a distraction or potenial hazard on the job
Also, I have an 80 gig zune! Man, this thing is tough. I can throw this against a wall and it won't get defective. It holds a lot of music but to be honest, I may be switching over to an iTouch eventually. You can get Pandora on iTouch and check your email...Seems much more useful to me than my zune. Sorry Bill Gates. :/