I have two monitors, and despite being massively different in age, quality, size and resolution (a recipe for disaster), I have found them to be immensely useful (albeit in a Desktop rather than a Laptop setup). I know that you didn't ask this, but are you looking for a 16:9 or a 4:3 (or 2.35:1) aspect ratio? As a coder, I hate widescreen monitors: I like to see more short lines, because there are not many long lines in coding, which makes a 4:3 aspect ratio better than a widescreen. 16:9 inverted is a different story though...