joker97: onkyos run very hot - you need good ventilation around your receiver. there are more odd amps which blow a channel than other brands but that tends to happen early on, so if it's lasted then it should be in the better built half of their products.
apart from them my friend has one since 2007 and he is pretty happy with it.
I've had two dud Onkyos this year, each lasting about two months before developing a fault. The second one has been away for repair for two weeks and counting so I wouldn't buy another one.
That said, the guy at JB Hifi said he's had one that has lasted a few years without any problems so I think you're right in saying that the ones that don't have manufacturing defects probably work OK.