Oh dear if i keep making many more "pro-CRT" comments people will start getting me and C64 mixed up!
Its just a total no brainer for first person shooters. I've had the 226bw and ive seen the older 4:3 viewsonic 19" 2ms (highly rated) one aswell and on first person shooters both are nowhere near CRT for responsiveness. I'd go as far as saying the 226bw makes you just feel like your at a reasonable disadvantage (yet still the best fps gaming lcd imo), while non-overdriven 8bit panels like the dell 2407 make me wanna puke up using one!
I'd recommend saving a load of money and picking up a compaq P1220 second hand for approx £40, you can then play games crystal clear at 1280x1024@120hz with the gaming smoothness uncomparable to any TFT.
As said before, this is the real grey-area for LCD's, i'm a firm believer they are better at all other types of games than CRT but ..... FPS games + LCD =