I have the Sony CDX-MP70. Sounds great, never skips, has always played any CD I put in it. I took a couple of CD's with MP3's on them to Circuit City and tested a bunch of different car MP3 players, and this was the only one that played both of them without a problem.
Has a way cool CD loader too. Push a button, and the face plate rolls down and the CD tray comes out like on a PC!
XM radio compatible also....
Crutchfield has them for $499.00...
http://sm.crutchfield.com/cgi-bin/S-...DXMP70&o=m&a=0