
LG
45GX950A-B
Huge, immersive OLED, but 800R curve distorts productivity.

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I have a Xiaomi mi monitor ultrawide 34 and it's excellent for the price for info!
Avoid Xiaomi. I have the older 34" and I had to manually lower the Hue to achieve a somewhat accurate image. Besides, it's slow, and newer models have their own drawbacks. VA is awesome, but even deeper blacks would be better. I use curved 27" VA right now, and curved panels are less deep than flat (tfw when flat is better 🥵). Actually, curve worth it, I always missed it after switch to an ultrawide IPS (it died within a month btw). In games like CS, or any other competitive games we have some kind of a tunnel vision, so we won't pay attention at corners of 21:9 while adrenaline pumps. It does look nicer, its more immersive, perfect for movies, but 21:9 is still ahead of its time and lacks of vertical FOV. FPS drop in comparison to QHD is noticeable. In comparison to FHD its huge, you'll need a GPU with at least 12Gb of VRAM and capable of 100+ FPS in 3440:1440 in somewhat modern games. tl;dr no, get the QHD 16:9
I bought it and loving it. I had the old version, this looks better with the higher Hz. Totally wrth it.
I have an older Xiaomi Ultrawide that does 144 hz. It has transformed my gaming, the ultrawide format just is better in every way. I'm not looking for a replacement, but if I was I would be looking at a Mini LED monitor in Ultra wide.
I use the xiaomi 34" ultrawide for simracing and i love it, i have it installed pretty close, between the steering wheel and the wheel base. I would like to upgrade to a 49" 32:9 if i had the space and GPU power https://preview.redd.it/28bpd4rghijf1.jpeg?width=4000&format=pjpg&auto=webp&s=aa3643bdf4d6c60637884c5b977fdf1036886abc .
Yes, i have been using it for almost 2 years now, no trouble at all. I just noticed that the xiaomi monitor you are looking for is actually the newer version, mine is the 144hz version so the one you are looking for should be a bit better.
It depends on your budget. Also, have you ever used a VA panel before? From my experience, I previously owned a 27-inch IPS monitor, then I bought the Xiaomi 34" which uses a VA panel. Honestly, I didn’t like it at all the colors and viewing angles just felt off to me. I ended up selling it and getting the MSI MAG401QR instead. The price difference was quite big (around $310 → $460), but it was worth it. The MAG401QR uses an IPS panel, not VA, and the improvement was noticeable. However, I did hear good reviews about the AOC model you mentioned (the one in the picture). If you go for it, I recommend getting the 240Hz version.

LG
45GX950A-B
Huge, immersive OLED, but 800R curve distorts productivity.
LG
39GX950B
39-inch 5K2K OLED: great clarity, comfortable curve.

Samsung
Odyssey Neo G9 G95NC
Massive 32:9 mini-LED; great for productivity, but buggy.

Alienware
AW3423DWF
QD-OLED gaming king; poor text, fragile screen surface.

Alienware
AW3425DW
QD-OLED gaming; good value; but VRR flicker and fuzzy text.

Ranked #1
LG - 45GX950A-B

Ranked #1
Samsung - Odyssey Neo G9 G95NC

Ranked #1
LG - 45GX950A-B

Ranked #1
Alienware - 38 Curved Gaming Monitor - AW3821DW

Ranked #1
Samsung - Odyssey Neo G9 G95NC

Ranked #1
Samsung - Odyssey Neo G9 G95NC