Over the past year I've upgraded to an OLED TV, Xbox One X and Apple TV 4k so I need to update my receiver to take advantage of all the new 4k HDR Dolby Vision sources! I'm currently using a Yamaha RX479. Speaker setup is currently 5.1 with hopes to make it a 5.1.2 atmos setup in the near future. I've really enjoyed my current Yamaha. I didn't like the 683 config b/c not all the HDMI ports were 4kUHD but they've changed that with the V685 which includes a total of 5 4kUHD HDMI ports. I've read a ton of great things about the Sony but they seem to provide less ongoing support for their products and the network standby mode on the DN1080 using a lot of power (over 20 watts from what I've read). However, some folks rave about the sound quality. Which would you choose and why? Thanks!