wtf i have the exact same setup lol, x900f with x700 4k player(65" version)Got a yamaha avr too?
Sounds like you have good taste.
I use a Denon AVR X2400H. Probably upgrading it to a 4400 model when we're past the pandemic, hopefully. I just recently added front atmos speakers and loved it. I can't add any more speakers (7.1 or 5.1.2 only), so time to upgrade.