I have a hard time seeing people shit on Mellon Collie, even though I know it's totally overrated and and about 1.8 discs too long. It just has some songs that hold such immense early-highschool nostalgic value for me. No way could I pick it as best album ever though. Oh, and Adore is good, not bad.
Picking "best album ever" is impossible. There's no such thing, and there never will be. I can't even think of my favorite album, it changes every few years. 8 years ago I would've said DSOTM. 3-4 years ago I would have said OK Computer. But the more music I discover, many of which are great on so many different kinds of levels.... the fuck if I know.