I can't say I've found a favorite, but I've been using a NEC 2490WUXi2 (24" 1920x1200) for a while. Would find it difficult to go with less. Would prefer the same thing, but with twice the width and maybe a color e-ink or OLED for display tech to be even smoother (though I have no real experience with such).

[0]: https://www.necdisplay.com/p/LCD2490WUXI2-BK