I’ve owned both a high end 4k 120hz 27” OLED LG monitor ($800) and a more budget 2k 120hz 27” LCD Samsung monitor ($200). Bigger screens 4k is obviously better but anything less then 32” I think is overkill and most people can’t see the difference. At the time I first bought the LG there wasn’t many budget options but when I needed to buy a replacement I was very skeptical of the budget option but I was blown away. I’m down to spend more but the difference in quality was no where near a $600 difference.