Mr. gasket makes one also...... I do remember seeing a thread started where someone was having problems with one being leaky....I believe the close nipple was coming loose
I have the original canister on 5 of my 409's , one of my 396's and my little 283 with no leaks and like being able to see what's going on inside. I have 2 348's going together that are also going to have the canister.
Not sure how true this is but years ago I was told the canister had more filtering area. New filters do seemed to have upped their game. Anyone know the facts?