IPS (in-plane switching) monitors deliver deeper blacks and more accurate color than most LED or LCD monitors, making them great for photo editing, graphics work and gaming. They also offer wider-viewing angles, so the picture looks exceptional even when you're not sitting directly in front of it.
LED (light-emitting diode) monitors provide excellent overall picture quality. They produce brighter images and require less power than traditional LCD monitors, and they usually have thinner designs. Monitors in this category are still LCDs, but they have advanced LED backlighting.
LCD (liquid-crystal display) monitors provide quality performance, usually at an affordable price. They use liquid crystals to relay what you see on the screen, and they are usually backlit by CCFLs (cold cathode fluorescent lamps).
Touchscreen monitors are popular for home entertainment and multipurpose use. You can swipe through photos, play touch-based games and tap tiles to launch apps. If you go the touchscreen route, look for one with edge-to-edge glass for easy swiping and an adjustable stand, so you can move easily from work to movies to games.