Two things you have to look out for when buying is the ms response and the contrast ratio. Specifically, you have to look out for what *kind* you're dealing with, because there is two different standards for each. It's similar to comcast's "omg let's measure traffic in megabits although everyone else uses bytes because it sounds like it's 8 times faster when it's not" thing.
Specifically, the specs given on the samsung 225bw are complete bull**** thanks to this marketing fad.
First off, for contrast ratio, there's DC (dynamic contrast) and SC (Static Contrast, not sure if that's the technical name since it's the 'regular' contrast). When you're thinking DC, think 'HDR', where colors are affected by their position on the screen in relation to other colors. It works, but it's never as good as regular contrast. If you see a 2000:1 SC, and a 5000:1 DC, get the SC. it's better.
Next for the millisecond rating. The two kinds are BTW (black to white) and GTG (one color to another, I forget the technical abbreviation). In this case, GTG is much, much worse then BTW. a 5 MS BTW will beat a 2 MS GTG hands down, because going from no light to full is much more difficult then simply changing color.
Finally, 22" is just about perfect for me -- I find I have to stay too far away from a 24" monitor to use it. Anyway, I'd suggest you go with http://www.newegg.com/Product/Produc...82E16824009124. I bought a similar version (older model of the same design), and I couldn't be happier. It's probably the best monitor I've ever bought, and it's considerably cheaper then the competition.