Looks like it's been a while since I last logged in. It was a busy time!
I'll spend some time re-reading the older posts.
Decided to fight like a savage for the MSI 312URX when it comes in stock. Seems like QD OLED is the way to go over WOLED, at least the new gen of panels.
I got the 32 inch 4K Alienware OLED, and the MSI 321URX. First I ordered the Dell as the others weren't available. I thought I'd prefer the flat screen but can use the Dell in the meantime and return it if I don't like it/others become available. Needless to say, I liked it, but I returned 3 units that arrived completely scratched up. The initial batches had insufficient packaging considering the anti-glare layer of those displays is made of soft plastic. My fourth came with a screen protector and has been perfect, but then the MSI I had on backorder shipped. I ended up keeping both.
I slightly prefer the Dell. The service is second to none, which surprisingly the three returns showed me. They bring you a new monitor that you can set up, and then come again to pick your old one up, with minimal hassle. It's quite important due to inherent burn-in risks of OLED. The build quality and software polish is also somewhat better than MSI's. But MSI is flat, if you care a lot about that. I thought I did, but the curve on the Dell is quite subtle, and it helps reduce reflections. Like, things behind you but somewhat to the sides don't reflect thanks to the curve.
They're definitely the best displays you can buy today. There's also the overpriced and slightly sub-par Asus model, and a Gigabyte model. All use the same panel with the exact same image quality as far as any differences that would be noticeable in real life are concerned. So pick by the price/availability balanced against the non-image-related features you may care about. I don't care about the inputs/outputs on the monitor and only cared about the image quality and reliable software/OSD that doesn't get in the way with OLED care features and such (which the MSI asn't as good at as Dell, but it's got the same image quality, and it's the cheapest option).
Overall considering the far superior (and more convenient) service and related trust that Dell will take care of any issues I may have with the monitor in the next three years, compared with the many discount codes floating around for purchases at Dell, I think if I were to pick one all around best, I'd pick the Alienware. It's the one I use as my main monitor now.