Thanks for you replies guys. 
Orph: That monitor looks really nice. However, the height is only 1050, and I really need at least 1200.
Also, it seems like the monitor is only sold in the US.
Crono: It doesn't necessarily have to be 4:3. For example, a resolution of 2000 x 1200 (does that even exist?) would be OK, just as long as the width is no less than 1600, and the height is no less than 1200. This is so I can view four tables at the same time when playing poker.
$156 for a 20" LCD certainly is a cheap price. Too bad the height is only 1050.
Nickelman: That one also looks very fine. But, again, 1050 pixels maximum height.
Another thing, I noticed in the specifications of the screen that the monitor "only" has 16.2 million colors. If I remember correctly, for a monitor to be 24-bit, is must have 16.7 million colors? I guess the difference could be very marginal.
I've been looking around a bit for different monitors, but as soon as I find one that looks decent, there's always something that's less good about it. One that looks decent is the LG L2000C 20". However, some have reported problems with "banding", others say that have no problems with it. Here's one review from a user having no issues with banding. Here's a pic of what banding looks like in WoW on a Dell screen. A discussion about banding on the LG L2000C.
Also, it's height doesn't seem to be adjustable. =/ (EDIT: Apparently the hight is adjustable.)
Anyone have any experience with this screen or banding in general?