As a partial answer, the Bearikade is the only can that truly seals the contents behind an o-ring. The others, including the BearVault and especially the Garcia are unsealed (the BearVault is the better of those two, but is hard to open if you screw it too tight).

Just handling the cans leaves scents on the outside surfaces, but at least with the Bearikade, very fragrant stored items are sealed up.

As to bears marauding in campsites, they'll indeed return to the scene of successful earlier crimes. It's how they roll.

Cheers,

_________________________
--Rick