I just got the Nassau Coliseum Wall show on DVD that I ordered through ebay. I'm quite happy with it. No, it's not crystal clear quality, I'd say it's a couple generations in. But I have the same show on VHS and the DVD is much better. A little clearer and better sync.
I've heard that they used the wrong cameras when they filmed it. Or at least, they might not have known how to go about it exactly, which it looks like. But, it's not like there were alot of concerts of this magnitude ever filmed before.
I now have the Earl's Court and the Nassau show on DVD. I'd have to say I prefer the Nassau one. Not as many technical difficulties. Earl's Court also has lots of close-ups. While this may be a nice idea for most shows, it's not such a good one for this show. There are parts where you're staring at darkness for minutes at a time cuz the wall is up and the camera doesn't pan out. "Hey You" for instance, you see nothing.
Nassau is the opposite. There are very few, if any technical glitches. You also get a better look at the whole production, not as many extreme close-ups.
I've yet to see and almost unwatchable copy of either show. But that of course depends on your definition of, "watchable". If you're a stickler for super-clear, hi-fi stereo sound and all that, then you will be dissapointed. "The Wall-1990" would be your best bet there.
But if you don't mind a lesser generation video, they are a great document of a crucial piece of not only Floyd history, but music history. You can probably find them for a decent price to. My Nassau DVD was 18 bucks (american), which worked out to just over 20 dollars for me in Canada.
Of course, you have to have faith in ebay, which not alot of peope do. I have been buying quite a few things off there and haven't had a bad experience yet. In fact I've picked up quite a few very rare and very cool Cd's and DVD's.

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russman

I didn't grow up with a string quartet either