So if you want a device that is equipped with the latest and future video connections, then I recommend the Denon AVR-S660H. This has 6 HDMI inputs. In addition to 4K images in 120Hz, as the latest TV models and games consoles can do, the model can also play 8K in 60Hz. HDR10+ is also used for a nuanced presentation of the picture.
The Denon AVR-S650H only uses HDR10, the 5 HDMI connections can only reproduce 4K in 60Hz.