Bigger, better monitor for cad?

[Banzai_Joe]

Hi all,
so one of our designers is moaning that her 24" monitor isn't as sharp as her mac one at home
All our designers use a mixture of Dell U2412M, U2414H and P2412H monitors at 1080p res.
No slouches as far as workstation screens go.
Some of the cad monkeys complain of fuzzy text on cad files (on screen obvs).
The main apps are; Autocad, InDesign, Photoshop, Sketchup

If i were to look at the OCUK stock for maybe a 27-29" screen with 1440p res what would you recommend?
Would going to 120/144Hz help?
What about a curved screen?

cost isn't an issue right now (might be if i don't get the budget )

All computers have GTX970/980 in them so 1440p res aint a problem.

Any advice appreciated, thanks.

 

[Banzai_Joe]

Thanks fellas, been doing some reading and apparently CAD apps don't 'seem' to like 4k too much due to the effecitve screen resolution. Sweet spot seems to be 27" at 2560 x 1440, giving an effective screen res of about 109dpi which it plays nicely with (according to autodesk forums).
So, i'm thinking of the Dell U2715H.
We use AutoCad (see op)