I Am trying to decide between 3 TVs to buy between the ones that are available here in Brazil with HDMI 2.1, VRR and 4k@120Hz

all of them from LG.

82UN8000PSB (LCD LED) 75NANO90SNA (NanoCell) OLED65B9PSB (OLED)

At the moment I have a LG 65UJ6545. and my sofa is 2,3m away from the TV (7,54 feet for my USA friends) I primarily use my TV set as a HT PC. Its on my living room and other than the PC, my PS4 and switch is hooked up to it.

for image quality I assume that the oled would be unbeatable. But I kinda like upgrading the size of my TV when I upgrade the TV. So even though OLED might seem like the safe bet. I am kinda bummed that it would be the same size as my current TV.

the other 2 even though they are not OLED they are more expensive due to their size.

I believe that only OLED is Officially G-Sync compatible. But those other 2 have Forum VRR, and my understanding is that you can use VRR with N-vidia Graphics cards if the TV has Forum VRR, right?

I am having a lot of difficulty deciding between those. but rtings.com helped me at least to narrow down to those 3.

Can anyone confirm that this is the case? (that I can use VRR on my PC even if I dont get the OLED one) And Can you provide any feedback that can help me decide?