Key step-up features on the 837 Diamond Series Mitsubishi WD-82837 82 iNCH 1080p DLP rear projection HDTV pictured to the left compared to the cheaper Mitsubishi WD-82737 82 iNCH 1080p DLP HDTV include Mitsubishi’s Perfect Tint system, four HDMI 1.3a inputs (instead of three), Dark Detailer circuitry that brings greater clarity to dark areas of the screen, Net Command home networking system, USB media input, ISFccc certification and an RS-232C control interface. Both the 837 and 737 models feature Smooth 120Hz smooth-motion processing to minimize fast motion blur, along with a new Advanced Video Calibration mode, JADE activity based user interface, improved Deep Field Imager, Sharp Edge video noise reduction, and 6-Color Processor. http://www.mitsubishi-tv.com/theater.html