MTX 342 had (2) sold one to my cousin and installed it in his Expo, sold the other to a friend of mine last year. Both were purchased in 2004, (one brand new, the other a refurb) and work perfect to this day.
I would still have most of the amps I used over the years, but things get sold/ traded for various reasons. Never really had one issue with an amp just dying on me, not even the cheaper stuff I owned.