As I start to answer your question, I scroll below and find all similar related topics, provided compliments of GT Planet (and the recent overhaul of the forums look). Perhaps it appears for you also if you scroll down, in any case you should be able to find these.
Perhaps you have already perused these topics. Let’s continue.
First thing that comes to my mind is cost. If you’re willing to spend $900-$1000 then you can get something fabulous. If you’re not willing to spend that much then cancel your PC order and stop reading! JK. Actually Gigabyte has a curved 34” $450 21:9 144 Hz 1440p monitor. Oh my it’s come down $30
I bought it for my 14 year old. For gaming, it’s great. I can’t attest how it works for sim racing (but I suspect it’s too small for good FoV).
For myself (sim racing, console only, GT Sport primarily), I just bought this $900
Hisense 55 U8G inch 4k 120 Hz TV. With this TV, I am prepped for PS5 120 Hz 4k as well as the future gaming PC.
4K At 60 Hz requires RTX 3080 Ti or 3090 (especially considering future plans of Pimax VR). OK, you didn’t ask for TV recommendations, however, I have used several different screen sizes and believe it’s worth mentioning. I was blown away with Boosted Media’s triple 65 inch 4K TVs but for a reason you may not expect; from the stand point that the FoV would be unattainable. 65” looks too big to me but it opened my mind to
go from a 49” TV to a 55”.
If you’re hell bent on monitors, and have a cool grand, get the Samsung 32:9 (super ultra wide). Don’t cheap out on the 1080p, get the 1440p. (I still think FoV would be a concern).