If you don't see the difference that DVI can make to fine text, then as my son is an optometrist, would you like me to make an appointment with him for you?
Seriously though, I have recently bought identical dual ViewSonic 19" LCD flat panels,
(I previously had one 17" LCD and one 17" CRT), and I am just about to change my GeForce FX 5200 Ultra,
(that has one DVI and one VGA connector), - for a GeForce 256MB 6800XT,
(that has dual DVI connectors). - Because, I
CAN see the difference. ... Most noticeably mainly with fine print, like reading these forum pages. - If you were to look at any of the print on this page, whilst the identical page was displayed on the adjacent monitor, I am sure that anyone would be able to tell
instantly which monitor was connected via a DVI cable, and which one was analog.
Depending on other factors, you will not notice much, (if any), difference on pictures, MA, GA or DA screensavers for instance. But on fine text the difference
could be night and day!