I'm hung up on the fact that the two receivers I'm looking at only have one 4k @120hz hdmi port. The Denon x2700 and marantz SR5015.
Do you really need more then one? I have a Playstation and nes switch, roku and 4k player.
I bought the Denon AVR-S960H over the AVR-S970H after speaking with Denon. The only difference is that the 970 has 2 more 8K inputs and has a new HD on-screen menu. I could care less how fancy the on-screen menu is as long as it's informative. The extra inputs can easily be added for a cheaper cost and more of them.
I've looked into 8K switch boxes. Denon makes one as well that integrates into the input menu and remote of the receiver. It only has 3 inputs and connects to the one 8K input of the receiver. However when using it's integrated mode, it's extra 2 8k inputs takes the place of the receiver's 2 other 4K inputs. So you gain no additional, TOTAL HDMI inputs. It regular mode, you use the switch boxes own remote and it doesn't integrate and use the receiver's 4K inputs. This way you have a total of 8 HDMI inputs now with 3 being 8K. The Denon AVS-3 is $150 at some retailers and has a $200 MSRP.
Myself, I want more inputs so I'd wait for an after market switch that offers 4 or 5, 8K inputs.
Honestly by the time 8K becomes popular, you'll likely have another HDCP version along with new HDR formats that will require a new receiver anyhow. So buy for today.
If all you're wanting is to play games on the one 8K HDMI input with different devices, buy a cheaper 4K 120Hz switch box. They are all over Amazon for around $40.
Good luck
