I'm sorry, i've used 120hz panels and if that's what you're referring to, i'd strongly disagree. If you're referring to a CRT that's pretty laughable, i'd rather not use a 50 pound hunk of junk with trinitron dampening wires. Anyways, 120hz is nice, but having to stare at a god awful TN panel with horrible color shifting, poor viewing angles, with most 120hz panels having horrible bleed - no thank you. 2560x1440 to me is far more immersive than any garbage TN panel, regardless of refresh rate.
There is no noticeable input lag for me on the u3011 or 2713HM, they are great for gaming.
Some gamers seem to insist that a cheap junk TN panel at 23 inches and a low 1080p resolution is good for gaming. Once you game at 2560x1600 there is no going back, gaming at super high resolution is immersive. Staring at pixels (due to low 1080p resolution) and being subjected to color shifting on TN panels turns me off, if anything.