Wow, Apparently your somewhat misguided in your outlook towards AVRs. Most people blame an AVR for cheap quality because they:
1.) Stick their AVRS in a confined enclosure with next to little airflow and wonder why it died prematurely.
2.) Choose speakers whose load impedance is beyond the AVRs intended design capabilities.
3.) Try to fill overlty large rooms with high volumes..again something an AVR is not designed for.
Its like owning a corvette to try and pull cars out of ditches.....it won't last long... applies to item 2 and 3.
There is clearly good reasons to use separate power amps. However these reasons preclude "cheap junk" which they are not.
. Its very clear from this thread and others like it that AVRs are reliable and will be if they are uswed within their intended design goals.