I apologize, I should've been more specific.
Any good NON-LOONEY TUNES cartoon DVD sets that any of you guys would highly recommend?
Definitely the Max Fleischer Popeye cartoons, available complete in three 2-disc sets— excellent restoration, and lots of bonus documentary features. If you
really want to go back into ancient history, you can get collections of the silent Felix The Cat and Mutt & Jeff cartoons. They're primitive, but also very entertaining because the animators make no bones about the fact that "it's only lines on paper, folks," to quote R. Crumb. If a character wants to slip himself under a door or walk straight up the side of a building, he just goes ahead and does it. This is the kind of animation that Walt Disney hated and tried to get away from, but there's really nothing wrong with it unless you have a compulsion to believe that cartoon characters ought to appear real (and he did).
Speaking of Disney, I've also got Volumes One and Two of "Mickey Mouse In Black and White" and the first three animated features: "Snow White", "Fantasia," and "Pinocchio." I stopped there, because after around 1940 Disney started to aim his pictures more directly at young kids, while the earlier ones can be enjoyed by anyone.
Something I bought as an experiment is a collection of Ub Iwerks cartoons. Iwerks was Disney's original partner and right-hand man who left the studio after a dispute with Walt (which happened a lot, because Walt's word was law around there and he tolerated no dissent). The Iwerks cartoons have had the reputation of not being very good, and... they aren't. Iwerks could certainly draw, but he didn't have much of an imagination and the cartoons show it.
There you have a few suggestions, but of course tastes in animation are very subjective. Someone else might recommend, say, the UPA cartoons, but I don't like their style at all. There are critics who say that UPA's "Rooty Toot Toot" is a classic, but I think it's about the worst mess of ugly "modern" visual design I've ever seen. I think it's on YouTube if you want to check it out; if your taste differs (a lot) from mine, you might like it.