I used the 2005fpw for about a month before I gave it to my brother and got the 2405fpw.
It took a few days to get used to widescreen. Now it's weird to use anything else. I personally would really recommend a WS monitor. Windows Longhorn (their next OS) will be designed for widescreen monitors apparently, most games support WS and if they don't you can make them support it, having a lot of room on your taskbar is very handy, using the internet with 2 browser windows side by side is nice, multitasking is simple, etc etc.
If you're looking for deals check out anandtech.com's forums, as well as bensbargains.net
I've seen the 2005fpw as low as about $479, and I got my 2405fpw for $860.
<pre><font color=red>A64 3200+ Winchester
DFI Lan Party NF4 Ultra-D
1GB Corsair 4400C25PT
WD740GD, WD2000JB, WD1200JB
ATI X800XL
Dell 2405FPW</pre><p>