Quote Originally Posted by Noni
OOps, sorry then, thought you was talking about a 24inch one
No worries

For comparison:

a dell 20" widescreen does 1680x1050
a dell 20" 4:3 does 1600x1200

a dell 24" widescreen does 1920x1200

So, to my mind anyway, at 20" at 4:3 is only 80 pixels shy of the widescreen version in the horizontal, but 150pixels taller in the vertical - so you end up with more actual screen space.