if you want robust, go with CRTs. They are usually cheaper & have a glass face which makes them a little harder to scratch then LCDs, however they do take up more space on the desk than an LCD.
For looks, go with a LCD. As "nffc10" says, you can get screen protectors for LCDs and most monitor manufactures will have protectors available(for a price) for their LCDs (i know EZIO does).
However, normally these "protectors" just stop people from scratching & writing on the screen...where they fail, is that they dont really stop people from Poking the screens as the protectors are usually a slim piece of flexible plastic.