Don't be fooled by specs like "refresh rate" alone; there's many ways to spec response time.
I tried a well reviewed Dell 1905FP ($300), which was fine for office work, has an excellent tilt/swivel/height/pivot stand - but it had funny color shifts on many moving objects. I'm now using a Viewsonic VP930b, which is very good, but $360.
LCD screens are always a set of compromises: cost, 6bit/8bit color, response time, viewing angles, stand flexibility, analog/digital inputs, etc. In general, the faster displays will tend to be 6 bit, with less color accuracy than slower, 8 bit screens. Gamers tend to want the speed at the expense of color accuracy. I went with a balance of 8 bit accuracy with decent speed, 2 analog and a DVI input, and versatile stand, but it cost me.