I've had a Denon AVR 3801 since May 2000. Still working strong but now outdated with no HDMI inputs. Just replaced my TV, so I need to upgrade receiver and I'll be replacing with another Denon only because it has been so reliable.
There is no non-reliable brand in those we discussed in this thread. Audition each, before you make a call. Almost all of them will surely run for 5+ years without any issues, unless you stay in a place with frequent power fluctuations