I used a B&K Ref 20 and Ref 5 channel amp for a while and the sound was very good for stereo and HT. I sold that and moved to audio only (SET amps), then got out of audio for about 10 years.
Came back via HT with a Onkyo mid range AVR and now with an Anthem AVR. Took a small step back as far options (no ATMOS, Bluetooth, etc.), but better build quality, simpler interface and love the room correction.
Compared Denon, Onkyo, Pioneer, Marantz AVRs and they all pretty much sounded the same. Which I guess is to be somewhat expected in the $800 - $1,000 range. None were as smooth or engaging as the B&K
Looked at older/better/used separates, but really like the HDMI interface and ability to leverage modern DTS/Dolby signals. The Anthem has pre-outs and that's prolly my next step is to power the fronts with a seperate amp.