In several different stores I have witnessed the A450 to have sub-par blacks
in comparison to the Panasonic TH50PX80U. Now today in Sears the sets were indistinguishable. I adjusted settings all over the place and the A450 in Sears had superior blacks to any of the A450's in other stores, the difference was amazing. I am also sure that lighting was a non factor. I am convinced by what I saw but does anyone have any info from Samsung that there may in fact be different pannels based on build date on this model?