Lcd monitor

Whenever a pc show is around the corner, I will tell myself that I will buy a lcd monitor to replace my current crt monitor. But everytime, I will not buy cos I feel my crt is working fine and dun have the heart to replace it. But lately I found my crt monitor a bit crazy. I need to hit it for it to work fine. Hmm.. So will it be really the time for me to change? Haha....