For someone who owns a 65-inch LG B8, which I love and just ordered the Q80, I was thrilled to see your comments regarding the quality vs the OLED. Also had purchased a 900F before cancelling and going with the 80R.Well, I've got the LG c8 65 and the c8 77 as well as the Q80.
Now, they are all great. I wouldn't say the Q80 is as good as the OLED pq wise BUT it's also now all that far behind. The only really gripe I have with the Q80 is the smearing with fast moving picture (eg video games) that you don't get with the OLED... But it's a VA panel, so it's just the way it is, they ALL do the same thing.
It's WAY brighter, HDR looks stunning, the SDE is noticeable if you specifically look for it at times but the price is great vs the 77 OLED lol.
I don't think you will be disappointed at all. I'm a picky guy when it comes to video and I took back my Sony 950 x 75" because of horrific blooming (the Q80 does have it a bit but it's quite decent IMO) I'd use the 77 OLED in my living room and the Q80 in the basement beside my theater for video games. I find myself goijg to the basement to watch movies in HDR because it's so good!