Which monitor to choose for programming?

Question

Monitors

Hello, you, as experienced people in this matter, please tell me which monitor is more convenient to code on? I plan to take 2 27 inch monitors, I think they are the same, or one ultra-wide 4k for 34, and one for 27. Somewhere I met with comments that coding at 4k is not convenient at all, nothing is visible.

Question: 1. Tell me, in your opinion, what is better for coding 2 identical ones? Or one more, and the second, as an auxiliary smaller. How will the picture be converted from 21:9 to 16:9 format, will it be convenient or will it be necessary to play with the format and then nothing really will come of it?
2. What permission to take? I plan if one is 4k, then the second one too, so that the picture is + - the same, in order to reduce eye strain. Is it convenient to work on 4k or is it worth looking at something else.

Ps I understand that this is all purely individual, but still I want to hear everyone's opinions, which are based on experience. Maybe you have some options? I'd love the names. I don’t consider less than 27, I’m used to large diagonals.

Pss thank you all and have a nice day.

Answer 1

1. Either two are identical, or one is wide.
2. It is very convenient to work at 4k. Here is an article I recommend about this: https://m.habr.com/en/post/508824/

Answer 2

> coding on 4k is not convenient at all, nothing is visible.
Solved by scaling.
In general, everything is very subjective.
I myself am currently sitting at 1080p 27" + 1080p 22" on the stand.