I have two 622s, one on a 2 year old Samsung DLP, and one on a 40" 1080p Sony LCD. The Sony (right out of the box) does a much better job on SD than the Samsung. For example, Battlestar Galactica on SciFi is far more watchable on the Sony. As far as the native passthrough that kwindrem mentions above, my Scientific Atlanta from Time Warner could do it, and yes, it took a second or two longer to lock onto the format when i'd surf through the channels if it hit a different format on the next channel, but def worked - i LOVED it, and wish Dish would implement it.