I was going to comment on post #19 (Grooves) but post #20 (Dagok) says pretty much everything I was going to, primarily that it's subjective and that I heard people say that VHS quality was all you needed. They're right, that was all we needed, in fact that was far more than we needed. But it certainly wasn't all that I wanted. The same argument goes for DVD - and for Blu-ray.
Perhaps it was just my player, but I couldn't even tell the difference between DVDs upscaled to 720p and the same DVD not upscaled at all. I can definitely tell the difference between DVD and Blu-Ray (admittedly on newer hardware with 1080p support). Band of Brothers on Blu-Ray is the best video I've ever seen and I'm quite happy to have bought it twice. Something that good is worth spending another £40 on to see in finer detail.
I never did understand the interest in extras tbh. Maybe it's just me, but I get movies for the movie. Most of the extras are just a lot of backslapping with the cast and crew saying how great it was to work with each other. Barf. Some making-of clips are interesting where something original is done, I remember The Matrix DVD having some interesting stuff on how they did things like Trinity's kick circular freeze-shot, but this is a tiny minority in my experience. Anyway, internet services could offer extras, why not?
Hey look at that, I found something to say after all!