I have a DCM-380 and it's pretty nice. I think it has the Denon link, but I'm not sure (haven't needed it). It does play MP3's just fine, although using VBR will sometimes make the readout go wonky (although the sound is just fine). One odd quirk, though- it will only pass MP3 thru the analog outputs. For some weird reason it won't send the bitstream thru the digital out. Bizarre.
Honestly, I use my DVD-2200 almost all the time now. So much so in fact that the changer hardly gets used at all.