Just like thinking about your listening room for your audio pleasure, you'll have to think about the room where the monitor is going, to help you decide. I'm no expert, but I can say that the amount of ambient light present when the monitor is being viewed has a marked effect on the visual presentation. That's a fancy way of saying that if the room is too brightly lit especially from the outdoors, you may find that LCD screens aren't bright enough. A plasma screen will be brighter and thus perhaps more easily watched in the same ambient light. However, plasma screens are heavier, run hotter and may have burn-in problems over their expected lifetime.
When you go to a "big box" outlet and view these screens, which ones do you like?
Good hunting!