I have yet to find a better monitor than the Dell U3011, which is essentially the same unit as my previous 3008WFP (which itself there was a 3007wfp before it), which means it's a design that's been available approaching 15 years.

30" 2560x1600; c. 100ppi.

I run the numbers on all the Ultrawide, 4K, whatever hotness and I end up knowing I'll fit less vertical lines on the screen.