Just a side note, that is a small factor, two 21.3 inchers are cheaper than one 24.3 inch. Which would you choose, one Samsung 243T or two Samsung 213Ts?
I ran two 213t's for a little while and frankly it was overkill and took up alot of space. I think a single 243T or a FP2005 would be better: at least for me so I can get some replay value out of my games by virtue of the new look
If you are a gamer go with the widescreen. I can't tell you how much more immersive FPS games (the ones that support it) are in widescreen. I got my Sony 23" last week and it is awesome. I considered the Samsung but at $500 more than the Sony I could not justify it.