I personally would recommend dual monitors. I purchased an LCD to go with my CRT about 7 months ago, nothing as fancy as dual 17 inchers, but being able to use one screen for research and the other screen for word processing etc is great. Also when I have people over to my dorm room and they want to watch a movie they can just watch it on my crt and I can surf the net or whatever on my LCD. 17inches is an adequate size for an LCD and dual monitors increase productivity in my experience.