I bought the E2200HDA from Benq a while ago, also for the purpose of playing games. So far, I am very satisfied, especially the colors and sharpness are great. I like to play shooting games like cube and a lot of the worlds there play in the dark. But it's still a great picture on the Benq and it's a lot of fun. Besides, the design of the monitor itself is very beautiful, it really pimps up my desk. And for the price of under 250 USD it is a must-buy!
Check this review for more technical details and pics: