I'de also suggest getting a trinitron tube. They are the brightest clearest monitors you will ever have the priveledge to look at. If new sony trinitrons are out of your price range, look into new mitsubishi diamondtrons (they use the same tube). I got mine for $150 at best buy after rebates about a year ago.
Specs:
17" Mitsubishi Flat CRT
SuperBright Diamondtron
DiamondPoint SB70
The only problem that you will notice when you first get your *tron tube monitor are the horizontal lines (from aperture grill- the two wires you see hold the horizontal grill in place, and the two horizontal ones cast a shadow against bright backgrounds). If this will bug the heck out of you, avoid *tron tubes. When I first got mine I wondered what those lines were, but the brightness and clarity of the screen caught my eye more than the shadow. After a few weeks I hardly noticed it. You can only really see them on a bright background, and even then you have to be looking for them.