Personally don't think 5ms makes hardly any noticeable difference at all, especially for flight sims, it's 100Hz and supports HDR 10 too if that makes any difference. Did you see that driving game on that video I posted, I think it was Forza or Need For Speed, it looks pretty good to me. It's and MVA panel too so it'll have better color accuracy but it was just a suggestion. The GPU is going to be the killer, they are insanely overpriced now for what they are. It's supply and demand though and all this Covid mess has thrown everything out of whack. The RTX 2060 Super I got for $330 right before the craziness started are going for over $800 new and around $800 used. I've even seen some asking 1K on Ebay which is just stupid. I recently got into VR, and I'm sure some will disagree with me, but it's not a replacement for a good monitor and TrackIR. It's cool to try out, and there are some games and apps that are pretty cool, but for flying, my personal opinion, I tried it a few times and went back to the monitor. The cockpit proportions in the DCS hornet look off too, like down by your feet, it's kind of cartoonish. Playing on the monitor is just way more comfortable, convenient and practical for me at least. Call me old fashioned but I'm considering selling my headset, I haven't used it in 2 months. I do like it for driving games with a wheel though where you don't have to crook your neck all the way back in an office chair with your controllers on the desk trying to track that bogie. If it was a real plane it'd be a different story, probably real nice for a dedicated sim pit too.
So here's another one that looks pretty good in the 3440x1440 category. 1ms, curved and 144Hz refresh. Damn, wouldn't mind having it myself.
https://www.newegg.com/p/N82E16824012017