I've seen dual screen setups with one screen hooked up over DVI and the other by VGA, and there's definitely a noticable difference.
DVI gives a much crisper picture, with VGA you often have some (very small) alignment problems, and minor ghosting. Not always very noticable, but enough to see a difference when you have them side-by-side.
If you have the choice, DVI's definitely the way to go.
DVI gives a much crisper picture, with VGA you often have some (very small) alignment problems, and minor ghosting. Not always very noticable, but enough to see a difference when you have them side-by-side.
If you have the choice, DVI's definitely the way to go.