Ask HN: Best Display to Code & Design?

Hi HN,

I currently own an 11' MacBook Air and wanted to get your feedback regarding external monitors/ display.

Some of the options I am considering include the Apple 27' Thunderbolt Display or maybe a projector (such as the ViewSonic PJD5133 SVGA).

I would love to know what external monitor/ display you are currently using and what is it that you love/ hate about it.

Thanks,

Carl