Although it would seem to be old news to me, someone at the Steve Hoffman forums has posted that Sony has discontinued the manufacture of portable Minidisc players & recorders. Even as a Minidisc user, I thought that Sony had discontinued the portables 1 to 2 years ago. Sealed units now bring 5 times their original selling price from third party sellers on Amazon.com
I've never had any problem with my Sony MDS-JB940 home recorder, or my most recent portable(Sony MZ-N420D), but the portable is my 3rd or 4th unit, and if it ever fails, I'll have to pay through the nose for a replacement. And such a purchase would be risky. The most recent portable I bought was stillborn, and had to immediately be replaced by Sony. Sony sent a refurbished unit, though I had never gotten one second of playback from the original unit. Today, who knows if they can even repair a Minidisc player.
Don't get me wrong; I own an iPOD too(160gb iPOD Classic), but if I had to compare the sound quality of an iPOD playing 256kbps AAC audio(through headphones, not earbuds) versus a portable Minidisc player playing discs recorded in the 80 minute mode with ATRAC DSP Type "R", the Minidisc player sounds better.
I never tried to record with my latest portable,which can't record directly from a CD player, and which uses unwieldy, restrictive software useable only with a PC(my computer is a MAC). Sony did a lot of things that hurt the Minidisc format, and while the format was intended to replace cassette, there was one unfortunate parallel with the cassette format: consumers soon found that the pre-recorded software offered by record companies was inferior to the cassettes and Minidiscs that consumers could record on their own decks. The fairly few pre-recorded Minidiscs ever released used a substandard early version of Sony's ATRAC data reduction technology(ATRAC was subject to 3 subsequent improvements, and they were significant improvements)