I'd say when the price difference between them becomes closer, then the flat panels will sell more. A 19" crt is a couple hundred, while a 19" flat panel nears a thousand, if not more.
I'd say the image quality is close to the same, though I'm nowhere close to an expert on the subject matter. I have a 17" flat panel, and occasionally words or lines will blur, but all I have to do is scroll up and down and its fixed. But, as long as I can play counterstrike with my monitor, and see my folders well enough to click on them, then the image quality is perfect to me
my $0.02