I want to give people honest advice. If you want a great hdr experience, you need a brighter tv than the ru9000. I'd say the same thing about many oleds. You need a qled or sony x900 ect For me, I Hate hdr so I could careless about dolby vision or hdr10 performance. I find hdr too bright and I simply don't like it. It hurts my eyes. That's a personal opinion. So for me, I think the ru9000 will work great.Yes please let me know. What's your take on the lack of Dolby Vision? I was actually close to pulling the trigger on the Samsung TU8500 but the no 4k/120hz support took me off it.
I've not owned a Sony for a long time but I've always been a Sony fan so will be disappointed if I have to return this TV but likely will do if our favourite topic vignetting is too much of an issue.
As far as hmdi 2.1 and vrr in my opinion, unless you're a competitive PC gamer, it's mostly just hype and totally unneeded. The x900 you have doesn't even support vrr even though it was supposed to. They are just trying to give people a reason to upgrade for the new consoles. They are still filming movies in 24fps and steaming at 60fps. They should be filming at 60fps, but they're stuck in the past. Just be sure you ACTUALLY have a unique case situation that requires hdmi 2.1 Gaming on next gen consoles is not one of them. 4k/120fps aint happening on new release titles(remasters maybe). It would be a total waste of console horsepower. Better to up detail level.