You can buy either SamSung or ViewSonic LCD monitor. SamSung's SyncMaster 770P is the best one.
 When you are buying a LCD monitor look for these things:
 * response time should be 6 ms ( not higher than that)
 * Viewing angle. Unlike the CRT , the LCD monitors can't be viewed in every angle!!
  When viewed beyond a certain angle, the Image appears dull, distorted!!
 So look for greater viewing angle
 * Also check for dead-pixels , stuck pixel. 
 
    stuck pixel - a dot whose color won't change
    dead pixel - a pixel always appear black