I have a 1440p 27" monitor. On my monitor, ClearType vs greyscale AA is the difference between acceptable text and stabbing your eyes out with a rusty spoon.

From what I can gather, 4k at 32", which is the typical size you get 4k panels at, is just 30% more pixel-dense.

I have strong doubts just 30% more density will somehow magically make grayscale AA acceptable.

If you know any good 27" 4k mixed-use (ie >= 144Hz, HDR) monitors I'm all ears.