MP3 Player or CD Changer

MP3 Player or CD Changer?

I just bought a Ford Focus and it has the default Ford CD Player.
However, I'm a bit of a music junkie and would like to upgrade my sound system.

Basically, my CD player can hook up to a CD changer so I'm wondering should I buy a CD changer or should I go down the MP3 player route?

I'm familiar with MP3 CD Players but haven't used CD changers much (not in a car at least).

Any recommendations?

I would recommend the MP3 Player,150 Songs to one CD,can't go wrong,no need for changing disks.Some of the newer MP3 players allow you to use USB memory sticks as well.