No, not hands down.

It's certainly the most varied. It's like a two-pound Whitman's Sampler, a bit of everything - much of it good, some of it not so. If I'm looking for variety, that's the one I grab.
If I want to hear a band starting to press against the constraints of pop music, Rubber Soul & Revolver are the way to go.
If I want a great cohesive work, it's tough to top Abbey Road.
If I want a great collection of pop songs, I grab Hard Day's Night, or perhaps the "red" album collection.
Just depends on what you're looknig for.
There IS no best Beatles album.
Lex