I had the same decision to make 9 months ago and chose the widescreen 2005fpw. I found that it was an awesome choice and I am still loving it to this day. In fact, whenever I used a non-widescreen LCD I feel like something is missing....
For gaming it's great. No one will argue that if ALL you do is game and you have tons of money, a 22" CRT is still the absolute best for gaming. However, if you want to do anything else, especially any web surfing, the LCD is a better choice. At least IMO...
The decision between widescreen and normal is not so easy. There are alot of games that don't support widescreen and a lot that do, so it's a toss up. I force BF2 to run in widescreen but doing some streching and for me it works great. I actually have a hard time playing it when it is not slightly streched... go figure.
My friend was buying an lcd just before me and made the other choice and got the 2001fp. He loves it and when he sees mine is still very happy with his choice. It's all about what you do and what you want, you can't really go wrong with either. I love the widescreen for movies, he loves the normal for more desktop space (1600x1200 has more space than 1680x1050). I prefer the widescreen for games, he prefers the normal for games.
As I said, you can't really go wrong. So many people have this screen or similar now it should be easy to find a place where you can look at one or the others. Good luck!
-spike
PS I am now looking at getting the dell 24" widescreen and replacing my sony 15" LCD with the 2005 as my second monitor. Dual widescreen goodness... heh heh.