Its very good tft, I am not using it for games, but image is very very good. response time is real 20 ms. for hardcore gamers I recommeds number lower than 16ms (16, 12 or 8). but there is a questions - real response time is measured when when pixels is going from white -> black -> white. (there are used 3 parts of light R,G,B) some companies presents the lower response time only for one part (where is time lowest) red -> black -> red etc. and other parts can be much slower or not synchronous.
So, decision is:
If you are hardcore gamer - buy something with <16ms response (usually smaller displays has lower response time, for example you should try samsung 17" or 15")
(btw I am hardcore gamer, and I am playing on IBM T40 laptop (20ms) (also winuae), and I didnt notice any noise (or I am habitated with it) so I didnt see any problem here)
If you are playing game occassionaly, you can buy this one - he has a lot of good features/stuff
If you want to play 3d fps games - you should buy CRT.