My advice on buying an LCD monitor: DON'T.
I'm viewing this message on a Hitachi CML-170SXWB and I wish that I had saved the cost of this LCD monitor and stuck with a quality 19" CRT.
The ONLY areas in which an LCD is superior to a CRT are weight, size, power, and heat. In the MORE IMPORTANT areas of cost, refresh rate, flexibility, viewing angle, and image quality, a decent CRT wins over an LCD every time. A top-of-the line CRT will usually cost less than a cheap LCD with half of the viewable area.
An LCD is fine if you never use it for anything other than word processing, e-mail and web browsing and you fix your desktop to the physical resolution of the monitor.
If you play games or watch videos or use other resolutions, LCDs pretty much suck. The ghosting trails due to the slow drawing rate of the LCD pixels is annoying when playing DVDs, and it can make it very difficult to play games. Depending on the quality of the image-resizing algorithms in your monitor, looking at an image at something other than the native resolution can be anywhere from ugly to almost unreadable. Many games won't let you select the exact resolution of the monitor. Even when you can change resolutions, your video card might not be able to run the game smoothly at so high a resolution. LCD's are trendy tech toys, but they have not yet reached the point that they are a reasonable replacement for a good-quality CRT.