Scottz5 - Good points. Like you, if I create an MP3 CD, I can have close to 200 songs, depending on the bit rate I use. So, this way I am not flipping out CDs all the time.
That being said, it does not allow me to select playlists. So, when I am not in the mood for one genre, I still need to make the change. With my iPod, all my ecclectic musical tastes can be satisfied with the selection of a new playlist.
To do that, I do need to open up the centre console...which is a bit of a pain. But, for ~$60, this set up still is pretty decent. I did see a Harmon Kardon set up which was a bit more slick, but also considerably more $$...