iPod baby!
I listen to music mostly in my car... which makes the iPod ideal. The touch scroll wheel and interface makes track/playlist navigation a breeze while you are driving. Previously I was using a JVC in dash MP3-CD player. But it became a bit of pain because I was swapping discs so much. The plus was the JVC has a front input jack, so i can plug my ipod in directly... no FM modulation for me.