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

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I use the Dell U4919DW for past 5 years mostly for development and CAD modeling and got no complaints. I am now looking to upgrade to a HDR monitor but the original is solid.
Following. Had my Dell U49DW for past 5 years and want to upgrade to a HDR capable ultra wide. Looking for feedback on MSI 491CQPX
I'm rocking a Dell U4919DW and it works like a charm. I use BetterSnapTool but there may be something integrated into the OS now for custom window sizes.
I had this exact setup for the last couple of years (since the Dell UW4919DW was released). It sucks. Don't do it. Dealing with games sucks massive ass. A lot of these clowns can't program properly and the borderless window solution doesn't work well. The mouse pointer is virtually at a different location than where you can see it on the screen. Or the game stretched behind the task bar and you have to hide that, whenever you play the game. (I made autohotkey scripts for that, but it's still tedious). Then the other issues are your sides. Which I assume you would use 25% of your width for, so 1280x1440. Most websites and software suck ass and have no portrait mode. YouTube? Twitch? Discord? Whatever game website you use. There is no twitch with chat below the video instead to the side. There is no discord with servers or channels at the top. Windows also doesn't support virtual full-screen. Power toys can't fix that, they won't because it's the job of the graphics driver, not the OS. There is a tool that adds virtual full-screen, but it's not free and since it emulates drivers, not sure about the performance. What you actually want is a proper gaming monitor, 16:9 or even better 21:9, so you can play games in full-screen or full-screen windowed, so stupid devs can't fuck that up. And then one or two additional monitors or even a tablet for secondary information in a proper resolution or even full-screen as well. It's just not worth the problems.
Dell 52” vs Samsung 57” should be the real comparison. Seeing as you can get the Samsung almost always sub <$1500 and the Dell is $3000, I don’t see how this ain’t a slam dunk. Samsung also has a higher PPI. You could the Samsung and a second LG 39” or just the Dell.
Mac OS is a little weird in how it scales, if I set it to 7K, everything is super tiny but if you set it to 3680x1080, it actually outputs the 7K resolution and scales it up to 200% (same as setting the scaling to 200% in windows). If you set it to 3680x1080 (low resolution) it will output that resolution without any scaling (which looks a lot worse). Most of the MacOS problems seem to be MacOs specific (for example, i can only run at 120Hz on my mini, so I don’t think you’ll have better luck with a different high resolution monitor.
Dell 52” is IPS
I tested those Dell’s side by side. The most noticeable is the outer 5-7cm. With 1900r it’s a good read. With the 3800r i had the feeling i had to move my chair 20cm to the left or right.
I really want it and I'm considering pulling the trigger, but I find it interesting our different thought processes. For me, it just needs to look really good/sharp and I don't really care if it's 6k technically or not. It makes me wonder if you're wanting super crisp gaming, video editing, or dual use for home theater or something? For myself, I want it purely for productivity when writing code and building systems. I currently have a dell super ultrawide (49") and a dell ultrawide in a vertical stack and I'd rather one giant screen. I can use FancyZones or something to place everything I'm working on and there'll be more screen real estate closer together without having to look up so much because of the way the screens are mounted/gapped. I also like the hub too. It seems like I can get more done in a better workspace. I just noticed your edit where you don't want to game and it's for productivity. My 49" monitor is good, but I wouldn't say better than a product like this because I need more space and it's not easy to add any more space except above it. It also means my windows aren't as tall as I'd like them in some use cases.

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