The KDS-AV also gets my vote. Look at the Mag series. Samsung was having some trouble with their tubes acting up but rumor had it the problem was fixed, and they would also be in your price range.
ps I went through the same search for the last 4-6 months and settled on the KDS AV, over more expensive monitors (up to $500).
edit = the GS790 and E790 would be okay for moderate usage, but if you're into gaming or gonna be spending much time at all in front of the monitor, I don't think you'll be happy with either of these.