I look for:

A wide gamut (several percent greater coverage than NTSC), that's gotten pretty easy with LED back lights.

IPS

16:10 ratio (16:9 is just too short for its width)

Other than that, there's not much to worry about, because there's only an handful of IPS makers, and they're all turning out the same stuff. Those Monoprice ones do look interesting.

Oh, and my next monitor will have to have a DisplayPort input, but I don't have one yet.

Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris