There are several competing products in the realm of bear canisters. Some of the national parks actually list the approved models on their web sites.
You can go for minimum weight, maximum volume, and maximum price. I think the Bearikade meets this.
You can go for moderate weight, maximum volume, and moderate price. I think the BearVault 500 meets this.
You can go for minimum weight, minimum volume, and minimum price. I think the Bear Boxer meets this. However, it holds only about three days worth of food, so it probably is not what you are looking for.
There is also the Garcia. Maximum weight, low volume, and moderate price. Old tech.
All food whether opened, unopened, freeze-dried, canned, fresh, or otherwise must be stored inside the bear canister.