I feel extremely fortunate that my replacement model is a Samsung. It's more color uniform and minimal (no) light bleed, only had it for a few minutes in daylight so can't say for certain though. The LG had a purple hue on two corners.
Why not worry about it, and just buy it. If the screen is not to your liking exchange it then. I wouldn't worry about the manufacturer but the screen quality. There are plenty of posts here where owners have perfect screens even though the maker is LG