As someone with first-hand experience with both Bearikades, Garcia and the BV500 I offer these thoughts….
First, the Garcia is the easiest to eliminate if weight and volume are requirements.
The Bearikade vs the Bear Vault becomes a more subjective question.
First, the one advantage that the Bearikade offers is the ability to get custom sizes. I’ve mentioned this before, but they were pretty easy to work with in the event you wanted something outside their normal product line.
You can find custom size information on their website here.
The downside of the bearikades is that that 90 edge at the lid can cut into lightweight pack fabric. This is a concern. I did send a missive to to the company, and when I get a reply, I will let you know. The Bear Vaults have rounded lids.
Despite the edge issue (which requires to pack carefully, I rather carry Bearikade because of the weight issue.. Having a quarter along helps with opening the lid, obviously, but I found that system preferable to the BV500 I’ve used. I am sure there are others who would find the opposite to be true.
But the BV500 is a very good canister and I don’t think you’d go wrong either way. I think where you live and the style of packing you employ factors into this decision: I generally don’t need a canister except for very few locations. In those cases (such as the Sierra) I would like to spend a greater time in the back country than resupplying, in which case, I choose my bigger bearikade and larger pack. If I were doing shorter trips (say, three days), I think the BearVault might shine here – certainly weight isn’t as much an issue (you generally are carrying less food to begin with).
Happy Trails!
Dirk