I bought a 17" Gem (GL-821A) for my wife and have been playing a bunch of games on it just to test it out. It has a very fast response time, I have seen very little ghosting (If I rocket jump with a 180 degree turn I will see a very little amount). Actually I kind of prefer the monitor to my 19" trinitron based CRT.
Isn't the best monitor out there, but you can get one at Fry's or Newegg.com for just over $500 so I think it is a great lcd for the money.