I ordered the WB DVD of "On Moonlight Bay" specifically to get the great LT short "A Hound For Trouble" starring Charlie Dog. As far as I know, that cartoon has never been in any of the other DVD LT collections.
I too own all of the multi-disc sets and a few of the Superstars discs. I also have the Academy Awards set which includes a couple of LTs not found elsewher.
I picked up Warner's DVD of On Moonlight Bay because it was the only place to get the LT cartoon 'A Hound for Trouble' featuring Charlie...
Haha, yes, it's a bit of a funny statement... let me rephrase that - I don't regard Sniffles as essential, but I think the set is. Obviously the Hubie and Bertie cartoons deliver a lot more fun and laughs. But I think some of the Sniffles cartoons display Chuck Jones and team doing great...
I think the bluray sets are essential for the superb picture quality. Some of the Golden Collections had very heavy-handed noise reduction which removed linework and other detail.
As mentioned, the selections on the blurays vary from the DVD sets, but nearly all of the most popular cartoons are...