I'm a fan of this claymation series, but don't know which to get...
1) Warner The Incredible Adventures of Wallace and Gromit -- DVD Clamshell
2) Fox Wallace & Gromit: The First Three Adventures (1990-1995) (1996) -- DVD Keep Case
Fox originally had the rights to BBC products like Wallace & Gromit, as well as Walking with Dinosaurs, but since then Warner has taken over the rights.
With WWD, I believe EVERYTHING is exactly the same, but with W&G, I believe the new Warner version is slightly different aside from the "Happy Birthday" music being changed due to rights issues, there are a couple extras. It is of course in a snapper case too.
I'm glad I got my Fox version when I did, but I wouldn't mind the extras that the Warner version has.
BTW, you can't get the Fox version anymore unless it's through E-bay(I would think).
The Fox DVD suffers from edge enhancement. The Warner is pretty much EE free, but may look softer to some eyes. The only drawback of the Warner for me is the replacement of the "Happy Birthday" song on The Wrong Trousers, and its not exactly the end of the world.
For some previous discussion on the differences between the old Fox version and the newer Warner version, including links to some comparison screenshots, see this thread.
I personally have the older OOP version, but would still like to purchase/rent the newer disc, specifically for the commentaries included with Nick Park... That is major difference between the two versions, for me anyway... Don't know if they're outstanding, but it'd be great to hear if it's worth it... (hint, hint, comments please...)
I personally prefer the Fox PQ. The Warner one seems to be sourced from video instead of film, despite what he says in the intro. The picture is very soft.