Hm not so sure that they won't use 120 considering the big leap in power that is expect from the machines with them able to push 8k rez, who knows. Yeah you got a right bargain there might look into that TV myself, where did you get it so cheap? I have a 4k samsung that I use for the PC but an older 2017 model so looking for a change but the OLEDs are too rich for my blood, I mostly play games in 1440p with a rtx2070s and use nvidia's sharpening tool and it looks amazing. Don't think I could ever go back to an over priced PC monitor again when you put them up against the 4k tvs there's no competition visually especially if you make use of the TVs advanced image filters, unless you're a hardcore fps gamer and need the lowest input lag.
On a popular auction site, it was listed as open box mint but without stand (I have wall mounted it anyway). Dont know how they lost the stand but its 100% perfect condition so I couldn't care. Downside is only 12 month manufacturer warranty but i've never had a TV/monitor fail on me so not worried.
and yes that is what I do now, I only use my monitor for FPS/Strategy games and everything else (third person, racing, platformers, indies, action games) are all played on the TV. Playing something like dirt rally 2 on a big TV with a wheel is miles above the experience I had on my monitor.
Im expecting 4k/60 or 4k/30 on the more demanding games on the next gen consoles considering console devs always prioritize graphics over framerate, since thats what sells