@PENG Don't know if I'd go with the Yamaha RX-A6A. Not after Gene's test results. I'm experiencing some glitchy issues with my RX-A4A mostly HDMI, which I'm trying to isolate. I believe it is a CEC issue with my Hisense 65 U6G 4K. Also a web radio issue with my Yamaha RX-A4A. A couple maybe three will drop out randomly and the screen, OSD will pop up on the TV, back to just radio favorites and I got to go back and click back on the station. Does it intermittently and I believe it is also a CEC issue. I've disabled the HDMI link control on the Hisense TV and it seems to have stabilized internet radio of my AVR, stations aren't dropping out anymore weird huh? I know. I'm about to run optical audio out from the TV to the AVR and disabled all HDMI completely see what happens. I remember having that issue with my Vizio 65 4K and it did exactly that with my Yamaha RX-A1080. But not with internet radio streaming. Thing about that, you gotta use all your remotes for each device source with a optical out from TV, well not all of um. But back to OP post, I'd just go with the Denon 3700H that is a solid proven AVR. I do regret at least not giving Denon a shot last year when I went did a sit down look see listening session. About a half an hour, on the 4700H at BestBuy's Magnolia department. It was my 1st choice, ask Andrew, we talked about it he even recommend the 4700H to me over Yamaha RX-A4A. Andrew couldn't get me a good deal on the Denon like he did the Yamaha RX-A4A. But of course Andrew did rub it in on me, of reliability, longevity and service after the sale with Yamaha. Always trade offs with this hobby.
Oh one last thing, before I disabled HDMI link control of the Hisense TV, I'd use the TV remote to shut down everything. AVR would clicked back on like a second later doesn't do that anymore since I disabled HDMI link control of the TV. So that's why I believe it's a CEC issue of the Hisense TV.