Steve, no offense but have you considered LASIK?
No offence taken. But have you ever run a valid comparison?
It's no good just looking at one Blu-Ray and saying "Isn't that wonderful, it must be better than DVD - because the ads say it is and the technology shows that there are more bits in it."
The question is, can people tell the difference when they show a DVD & a Blu-Ray made from exactly the same source material and displayed on the same HD screen? Set that up and then switch back & forth between them and see if anyone can accurately tell the difference.
I have run that test for a lot of people - remarkably few people can detect any difference
There may be more information in a Blu-Ray, but can you see that difference?
If the difference can't be detected with the human eye there's not much point in buying Blu-Ray copies of titles you already own on DVD
It's only a valid comparison when you have the same film on DVD & Blu-ray and they came from exactly the same source material. As Blu-ray releases are often more recent than DVD releases the Blu-ray releases are often made from different, better, source material.
The latest Criterion Blu-ray & DVD of Blimp are both from the same source material so are a valid comparison.
But not many people buy the DVD & Blu-ray of the same film made from the same source material, so not many people notice the lack of difference between them
The British ITV release has the DVD & Blu-ray in the same package