I’ve got a Yamaha DSP-AX2, which I think is over twenty years old now, around 1992-97, according to Dolby info on the user manual, and still going strong, in fact it’s playing Talk Talk via my Cambridge DVD99 right now, through a Sony SA-VE815ED 5.1 speaker system, bought at the same time.
Only had to have the sub’s power-supply fixed, a year or so ago.
It was ex-demo kit in a shop I worked in on Saturdays, they were doing a total refurb and let me have the lot for half-price, £750.
Yamaha, Onkyo and Denon are constantly swapping places as the best AV amps/receivers in the magazine reviews, so it’s a question as to which has the right features for the right price around your budget, and the best value models are usually around £300 these days.