Reading reviews it seems to be panel lottery thing...but seems most are good. Mine has some darkening in the very corners (vignetting which is supposedly 'normal'), but is pretty good across the rest of the screen. Don't notice in regular viewing.Hi everyone. I am an owner of a 75 inch Q80T from samsung. While the picture quality is amazing, i am very bothered by the amount of dirty screen effect it has. It has a lot of visible vertical banding which honestly ruins the viewing experience. I was wondering if Sonys panel fair any better regarding the DSE issue. Honest responses please. How is the screen grey uniformity for the 900H?