Me too. I use a windows manager and generally work with 3 windows across. Middle window is 50%, each side is 25%. This gives me a “full size” main window (like browser, 2 column ide, etc). One side is “monitoring” for things like cmd, git bash, slack, etc. other side is “reference” For things like PDFs, spec sheets, etc. this works great for me. One full size window gives me 4 large ide columns. I also often use 25%/75% for “monitoring”/“ide”. Occasionally I use 50%/50% for comparisons.

I like it a lot. Sometimes I wish it was 200px taller but not often.

Some of my colleagues have 42” 4ks. They are also great but I find my head needs to move up and down. With my 34” ultra wide, only my eyes move up ab down.

I think 1 large monitor is way better than 2 monitors nearly all the time. True for either 4K or Ultra wise.

Also get one that is curved.