It will ultimately come down to you, you basically already know what to expect from both TVs.
For reference (and I know the 930e is brighter) I came from a Sony X900F and I never missed the extra brightness, I actually think the C8 is much brighter in HDR.
To me, another important difference is Dolby Vision, there's tons of DV content right now and the Q9 doesn't support it at all.
I would go with the Q9 or a Vizio PQ if your game room is super bright or if you're just too concerned with burn in, otherwise go with the OLED.
Either way you go, make sure you can return it if you're not satisfied.
Thanks man. Yeah IR and or burn in definitely is a concern of mine. My previous OLED, 65B6 had a big IR problem, so I am still wary for sure. As for Dolby Vision, I have to be honest .. I barely buy Blu Ray movies and I've been comparing DV and HDR10 on Netflix quite a bit and for me it's not really all that different and not a big deal.
I'm gonna think real good about this one,before making a decision.
As for Vizio, man I wish we had that brand here in Holland.