Here are some tips in buying LCD Monitor..:

Backlight Warranty - Generally, the flourescent lamp is the first thing to go on LCD displays. The easier it is to replace the flourescent lamp, the better. Either that or check he warranty o ensure that this is covered.

Dead Pixels - This is one of the more typical problems associated with LCD displays. Dead pixels refer to individual pixels that may be permanently stuck in an on or off state. These pixel defects are generally covered by manufacturer warranties (because doing so would raise the price of LCD displays significantly), so the best thing to do is to test your LCD monitor before buying and inspecting every square inch of the display.

Speakers - Many LCD moniors try to offer a higher perceived value by coming with built-in or auxiliary speakers. As a rule, ignore them. Most onboard or free speakers provide sub-par audio quality, so you are generally better off just buying your own set of speakers anyway.

Native Resolution - Unlike CRT displays, LCD monitors have a native resolution, which is the actual number of pixels on the monitor's display. While LCD screen can rescale PC images to fit the native resolution, the result aren't sharp. You would therefore want to choose an LCD monitor that offers a native resolution that would be comfortable with. The larger the monitor size, the greater the native resolution should be.
 
    TIPS in BUYING LCD