I noticed someone mentioning on another thread that Advanced Tech has said that they have NOT heard many complaints about the SD Aspect Ratio problem so I figured I better speak up. I have a Sony KP57WV600 16:9 Rear Projection HD Monitor hooked up via DVI to my 921. I have it set at 1080i and 16:9 for HD content. When the 921 is set at "Normal", HD is fine and fills the screen when a widescreen feed is present. When SD content is viewed it correctly shows only the content in the middle of the screen with vertical black bars. Trying to use the "STRETCH" function WAY overshoots the mark and extends the picture about 15% beyond the edge of my screen on each side. "ZOOM" Works a little better horizontally but chops off too much content from the vertical picture. As the DVI and 1080i feed disables my TV's stretch options (Only FULL is available) I cannot fill in the whole screen. I've used a workaround that seems to work OK as I change the setting from 16:9 to 4:3 #2 which makes SD more watchable, but then throws off the HD widescreen content by putting black horizontal bars into the picture. Please correct the "STRETCH" aspect ratio to better fill in the screen without bars and without truncating visual content.