Looking for a trustworthy ultrawide OLED monitor brand

Hi, I want to buy an ultrawide OLED monitor. I like the widescreen format for video editing and the immersion it gives in games (mainly Monster Hunter). I’m willing to pay more for OLED technology since I’ve used IPS monitors for a long time.

I was looking at Asus and Samsung models, but after reading some posts here I got worried about possible issues. My main question is: which brand is more reliable and gives fewer headaches?

I’m from Brazil, so I don’t know if the RMA process is the same here as in other countries. That’s why I’m unsure if the problems people mention with Asus RMA also apply in Brazil.

So far, I’ve had good experiences with LG and AOC, but the models that caught my attention were Asus and Samsung. I’d appreciate recommendations on which brand/model you prefer and why.

My setup: RTX 5070 RYZEN 7 9800X3D 32GB DDR5 6000MHZ CL30 (2x16)

Currently I have two monitors:

• LG 27" FHD 144Hz
• AOC 24" FHD 144Hz

If I missed any important info, feel free to ask!