I have a 19" Hyundai L90D+. I like it, very responsive, great for fast paced games like rtses and say unreal tournament.
Problems: 1280x1024 is a bit of a low resolution for a 19", so jaggies are bad unless AA is used. Most games support AA, but not all, and I think I'd prefer higher res anyway.
It's not widescreen. That's really just personal preference (since I think if you wide screen it, it's equivalent to a 17" widescreen LCD anyway), but there's just something sexy about widescreen.
It's also not an 8bit panel, meaning perfect colors are impossible to get. For most current games, this isn't a problem, even the extremely dark splinter cell series fares well (assuming you don't turn brightness down which will mess up the colors, but at stock brightness there is no noticable banding), however future games could really have problems. I think I would have gone for the 8bit dell widescreen, even if it does have a slower response time and thus may have been more susceptible to blurring. Then again, I've always found blurring more annoying than color banding, human eyes are more sensitive to motion than color anyway.
The main thing the hyundai had going for it is that it was low priced, uber fast, and has a pretty good picture. However, with future games using HDR and other techniques that are highly dependent on correct coloration, there may be problems. Of course, representing games in a non-rgb color space can solve this problem, but I've only heard of one or two devs doing this. (since it also helps with performance)
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