I recently purchased a second-hand CD/MD deck, the MXD-D40. This deck tends to be in the shadow of the later MXD-D400, mainly because of the lack of Optical Out and also the fact that it is Type-R. The MXD-D400 is the last Sony combo deck, and has Type-S as well as Optical out, and can play MP3 CD's (though *not* Atrac CD's, more's the pity). However, the D40 has one important feature that never made it into the later deck, namely the ability to control from PC via a PS/2 keyboard cable whic