I have only mentioned dell monitors as I don't want people to get lost in the fray of model names and numbers.
There are competitive displays from Samsung and Benq, but Dell being quite the recommended brand on the forum, I chose to look at their range for comparisons.
The purpose of this thread was not to reaffirm the notion that you should buy a Dell, but only to compare and contrast different models from a single reference manufacturer and what aspect ratio and size to choose from.
Needless to say, the BenQ E2200HD is a much better package than the S2209W, but I bet I have made a pretty good statement about why not to buy a 16:9 21.5 incher.