[sarcasm] Okay, then go out and buy a 2ms refresh rate monitor and you will have the sharpest images ever! [/sarcasm]
No really, response time should be the least of your worries. I can almost guarantee you right now that your 5ms refresh rate is g-g (gray to gray), not b-w (black to white). All 22" monitors use TN panels instead of the higher quality S-IPS and MVA panels. The 2007WFP uses S-IPS and MVA panels for sure. For more info on different panels, read here:
http://en.wikipedia.org/wiki/S-IPS