I´m using 2x Full HDs 28# Samsung Monitors in 1920 X 1080 resolution.
I don’t want a screen even smaller then HD resolutions like crazy small 2560x1440. That’s horrible small in my opinion if its not on a 52- 72# screen. How are you expect to work and see and edit things with it? You can’t see?
I have perfect eyesight. 
Some 3part software’s GUI is already to small today in 1920 X 1080 resolution. Especially if you are into program and editing your software’s. I don’t know why so many are so afraid of making it bigger? Until the software manufactures keep making these small GUI made for old 800 X 600 resolutions screens, I will stay in HD 1920 X 1080.
Check this horrible small GUIs example. This picture is even zoomed in. 
http://proaudioboutique.com/wp-content/uploads/2012/12/altiverb7-880px.jpg
I saw UAD 2 start making bigger GUI! Finally someone gets it.
Its more then welcome. 
Best Regards
Freddie