Well, If you buy a flatty 144hz, you will get bigger keels. A larger hitbox that basically aims for you.
I've traded my 454 for a iiyama 24 inch and I prefer it because it is allround. Colours aren't as nice of course, but for gaming it isn't a step backwards.
Oh, forgot to mention I kept my CRT, cause you never know.
Mine developed bad horizontal lines, took ages to warm up the colors, plus I stopped gaming due to other sport hobbies. I just gave it away and told them how to fix it if they want to bother buying new capacitors (good luck finding the right ones) and solder them on. Monitor was Sony Trinitron G520.
Not a single LCD I tried has anything on CRT in terms of fluid smoothness during motion. I actually now started to realize why most people suck these days and sit in one place while trying to shoot/aim. If you move/aim on a LCD at the same time you introduce big sickness motion and it's really awkward to hit anything precisely through the blurriness.
I remember the days when TFT came out and some event was bragging about using 19" BenQ TFT and everybody was like, oh man this is it, you can now throw away your CRT's people. Back then the main talk wasn't hz as everything was always 60hz, it was 30ms down to 15ms response time.
Then 120hz finally came out and everybody praised LCD's and said, ok NOW you can throw away your CRT's, but then somebody started messing with Lightboost.....
Fast forward another couple of years people are now saying 144hz has finally done it, no need for CRT old tech anymore but Gsync is coming out....I think unless OLED or something silly that replaces this entire IPS/TN garbage line, nothing will ever change. And is putting big faith on OLED that will manage to eliminate those disadvantages using high hz. Right now this image pretty much sums up what its about. http://i.imgur.com/hU9rUrg.jpg
Remember what SED displays were going to offer ten years ago? I'm still a little sad that got dropped - the state of the art in fast LCDs is, really, rather mediocre :/