Mark H
In your original statement you said that those who believed in upscaled DVDs should give up. In your next post then said, "who would buy a DVD instead of a Bluray". Not the same thing - as accurate as calling a HD621 a 612

The fact is some Bluray discs are far more expensive for a negligible increase in quality, which can make DVD more attractive. Some DVD's are indistinguishable from Bluray if you didn't know the source - in my case P03/D03 through a Radiance. As for saying highdef sound is better all you know is your getting the best, but again walk into a room and listen and know whether it lossless or not you are either very lucky or have exceptional hearing, which is possible. For one I watch the film, listen to the dialogue and follow the plot, so the pixels and all the techie stuff disappear. It is a broad church and in some cases there is no absolutely correct answer - it is a matter of opinion.
Rob