I generally use just a waterproof drybag hung or cached. Always away from camp. The seal keeps food odours in but it would be easy to chew through. Probably I would do that in a Ursack. Mind you, most of my food stuffs are not smelly like meats or cheeses or stuff like that. Usually dehydrated and pre-packaged in zip locked in bags already.

I am pretty cautious about bear safety scent wise. This extends to deodorant and toothpaste too. Other than the rare rogue, desensitized or surprised mother with cubs, most black bears are wary of man and will stay away - unless their noses say there's food around.

Grizzlies are different. I think of them as grumpy old men "get off my lawn" who also happen to be former heavyweight boxing champs with brass knuckles in one hand and a meat cleaver in the other. You aren't going to scare or beat them so the name of the game is avoidance.