I just bought a Sony PCM-M10, and I'm disappointed to read it doesn't last more than a few years.
I have a Sharp MT-88 MiniDisc recorder bought back in 2002 (already second hand, mind you!), and I've been using it throughout all these years to tape hundreds of shows without any problem at all.
11 years!I bought the M10 because I was tired of having to re-record all my shows into the PC using analogue connection, which led to me slacking in transferring all my MDs to PC, and I ended always looking for empty minidiscs for the next show, and sometimes having to transfer them at the last moment

(which as you know takes several hours, which is a pain).
So this new Sony recorder seems to be good, but without anything near the same build quality as the old MD recorders. If anything, these new recorders should last MORE, since they have no moving parts, no motor, no lens... A lot less things can go wrong! But it seems it's much more cheaply made than the old MD units, which leads to stupid failures such as switch and connector problems.