Compare Vizio M421NV 42" HDTV LCD TV to Vizio M3D460SR 46" 3D HDTV-Ready LCD TV

As spectacular as it is thin, the 42" Class Edge Lit Razor LED LCD HDTV delivers a brilliant, breath-taking picture in a razor thin design. 1080p Full HD gives it vivid color and impressive contrast, while a 120 Hz refresh rate provides smooth, ultra-sharp viewing for fast-action sports or movies. If you're one to appreciate real depth in color, you'll also enjoy its striking 100,000:1 dynamic contrast ratio that produces truly deep blacks and brighter whites.No matter your lighting arrangement, you'll always have you excellent picture possible thanks to built-in ambient light sensing technology that automatically adjusts backlight levels based on its surroundings. The result is a balanced picture that will never appear washed out or too bright.You'll also enjoy impressive surround sound with SRS TruVolume that limits volume inconsistencies between programming and SRS TruSurroundHD audio that turns your room into a personal theater. Less

Bring the movie theater 3D experience home! VIZIO's 46" Theater 3D" Edge Lit Razor LED LCD HDTV with VIZIO Internet Apps (built-in 802.11n WiFi) that delivers stunning, cinema-style 3D with lightweight, battery-free glasses you can wear at home. Whether you're watching the latest blockbuster or the championship game, Theater 3D means you see crystal-clear, flicker-free 3D that has a brighter picture than conventional 3D. Includes 4 pairs of 3D glasses, so you can immediately share the excitement with friends and family! Less