If it's primarily for general computing purposes, I think you're much better off getting two 20" monitors - you end up with more usable space.
If it's more for gaming or watching movies, which are both mostly going to happen on a single monitor, and you want that really immersive experience, then the 24" may be a better option.
Any reasonably modern video card will handle the two monitors. I've driven mine from a not particularly modern ATI Radeon 9800XT and a more modern nVidia 7800GS, and both have handled it fine (of course, I only use one monitor when playing games). Also, Vista runs fine with all the eye candy turned on also (though a bug in current Vista builds means you get display corruption if you run both displays at full resolution).
DingoJunior
The time has come to upgrade from CRT to LCDs. The main question I have is in regard to widescreens.
I currently have 2 17" ViewSonic CRTs. I have been using dual monitors since 1999, and am quite spoiled at all having all the screen real estate. If possible I'd like to change to 1 widescreen LCD, vice 2 4x3.
The issue is size of widescreen. I'd like to get a 24" Dell, but they are currently going for $800. The 20" widescreens are slightly more than $300. I can get 2 widescreen 20" for the price of 1 24". Of course, I think that trying to run 2 widescreens at full resolution would bring most vid cards to their knees, but it may be able to be done.
So, should I
a) Buck up and pay the $800 for the 24" Dell
b) Deal with the 20" widescreen
c) Get 2 17" or 19" LCDs.
What do you all think?

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