Ok, well the main thing to remember is that the panel technology is the main thing that will effect how the display picture looks.
So here are two
http://www.amazon.com/dp/B005S0XYKK/?tag=neogaf0e-20
http://www.newegg.com/Product/Produ...4014373&cm_re=gw2760hs-_-24-014-373-_-Product
The ASUS display is an IPS panel, it is the standard panel used for color accurate work like image editing, video editing, stuff like that. The viewing angles are better, the colors can be calibrated to be more accurate. The drawbacks are what people call IPS glow I think. The dark colors aren't as dark as they could be or should be, but still much better than your average TFT display.
The BenQ one is a VA panel, the type of panel that is more commonly used in TVs. The main advantage is that they can have darker blacks and better contrast compared to the IPS panels. The drawback is that contrast on VA panels varies depending on your view angle or the position of the image from the center of the display. Still better than any TFT panel. Durante on gaf claims that VA panels are best for gaming because of darker colors, better contrast, and possibly less image ghosting. On average most people just go with IPS when looking for something better than the cheapest monitor they can find.
Personally I suggest you do some more research on your own. In the end no technology is perfect and good things will cost you, so it's a good idea to know what you are buying and why.
Oh and both monitors have 11 ms of input lag or less according to the display lag DB.
I am personally using the BenQ display at home, I think it's not bad. No height adjustable stand kind sucks though.
Edit: Oh and one last thing I forgot no display is going to give you accurate colors out of the box. Unless it comes with some warranty for factory color accurate calibration from the manufacturer. You aren't getting that until you get into the $1000 range. So you are going to have to learn how to calibrate your display and do it by eye, and even then your results will probably be not all that great because calibrating colors without proper tools is probably impossible.