Mitsubishi is back with a spec bump to last year's well-received midrange HC6500 1080p projector with the HC6800. This model slots in below the king GT-styled HC7000 but increases its contrast ratio specs to 20,000:1 and does its big brother one better with a higher 1,300 lumens, apparently aimed at living rooms rather than the darker, more controlled home theater environment. Video processing is once again handle