Once you go ultrawide, you won't go back.

I am no expert. I use a Gigabyte Ultrawide. So far so good. One thing though. It's a bit too bright if use for long session. I need to tone tone down the brightness or it hurts my eyes. Get the one wirth 1440p if your PC isn't super powerful and you do gaming. I use an RTX 2070 and it's fine at 1440p for most games I play (I don't play FPS, so don't ask me about that).

I think 34" is really big enough for sitting in front of it on a desktop. I use my old 24" as second monitor for viewing videos so that I don't have to use my main Ultrawide if I need to follow long sessions of video tutorials
and can fully use the Ultrawide for all my work windows.