LCDs - Lower refresh rate (that's not a good thing), though in light of LCDs they have great quality viewing, a large variety of sizes, HDMI inputs and HD technology, 16:9 aspect ratio with DVI support for quality viewing for a large display. Recommended for gaming but not FPS.
CRT - Old fashioned, 120HZ capable monitors preferred for competitive FPS gaming, less strain on the eyes, extremely small and takes up alot of space.