a 20″ widescreen LCD won’t give you much more than a 17″ CRT on the vertical side
you’ll only gain a bit to the sides
that’s why isn’t much of an improvement as such
In PhotoShop, Flash, etc., having a wide screen is much better imo, becuase you have more space for the tools and palettes on the side, and you still have a square space for the image or whatever..