gotta shout out for my yamaha cdx-530. bought it brand new in 1990 for $300 and it still plays like new. and it's got groovy LEDs, too. Very nice sound- I've compared it to several players and it's beat them so far.
I had a Kyocera for a while- DA-310x, does that sound right? Another sweet player.
Ditto on the early sonys, the few i've peripherally had contact with (friends, libraries) seem to want to last forever. I would like to say the early all-metal discmen, but mine was very sensitive to vibration and eventually was so off-track it had to have pretty expensive work done at Sony (right after the warranty expired!!). It never tracked the same after I got it back.
Carver- DTL something or another- bought it in 1985 or 6 for- jeez, must have been five bills- built like a tank, played very nicely. I had it for two years- it was the only thing between me and a ticket home, a thousand miles away or so. It had to go.