Onkyo has the built for Sonos feature which can be nice to have in some cases. You can program the auto on feature to go to main room, zone 2, or both which can be nice. Also, at least in the past, they would allow you to select an HDMI video input, and then select an audio only source while keeping the video on screen, which is helpful for the customer that wants to watch video and listen to a different music source.

Yamaha's party mode is nice to have.