I'm looking for the best gaming monitor

as the title says i need a monitor (I prefer 120hz) 

is 3D monitor necessary ? 

any size from 24"-27"

budget : $300

Do you already have the 3D Vision kit from nvidia? (assuming you have an Nvidia card)

http://www.newegg.com/Product/Product.aspx?Item=N82E16824236262&name=LCD-Monitors this might work out