I've noticed the popularity of making these canisters required in many of the national parks. I believe they are of some importance and if they are required then they should be used. My question is...What is a good canister that is somewhat light and compact. I was looking around at them today and they all seemed to be ridiculously heavy and big. I would really hate to have to rebuy gear in order to fit this thing in my pack.

Im doing the JMT this july and will have to come up with something for that trek. Any recommendations on alternatives? Or at least the best of the bear canisters?