The OEM Ipod kit isn't great in the sense that if you have a decent collection you will probably find yourself disconnecting the ipod, navigating between albums and then connecting it back again. I don't think it's possible to navigate between albums? Or maybe I don't know how to do it...
There is also the limit of 99 songs per album/playlist which can be really annoying.
Vaistech units that integrate the display from your phone into the car are good alternatives but quite expensive at the moment.