Dear Sir Bygber: Let me offer an alternative, less expensive solution to some of the problems with DVD's I see discussed here.
On the advice in an article by Joe Kane (on the level) taken from the magazine Widescreen, I ajusted the black/white ratio on my TV set, turning the brightness way down from its factory settings. By doing this, I found, as Kane wrote, that I got truer monochrome and color images from my favorite films. [If you do it with a new TV set, according to Kane, it will add years of maximum efficiency to your picture tube or system.]
I used a tape and a laserdisc of CITIZEN KANE for my black/white ratio adjustment, and THE RED SHOES for my color adjustment. In the process, once I'd reduced the brightness of my set to near zero, a tiny adjustment would give me any kind of CITIZEN KANE I wanted. If I desired to identify all the actors in the Screening Room Sequence, just a touch would do it, and everything else would be in scale. By the same token, I could come up with my heart's desire in both CITIZEN KANE and THE RED SHOES under the ambiant lighting conditions of my viewing situation. And once set, it works for all commercially made, professional quality films.
It took a few hours to do, but I highly recommend it.
I cannot imagine that there is anything in DVD technology which would prevent a similar adjustment.
It's worth a try, Sir Bygber.