I think that if you are going through the hassel and work, paperwork, and everything.. We would all agree that this is something that anyone buying it would hold onto for a very long time.
I think that i would independent of the manufacture buy:
Threaded 30cal titanium can, that can be disassembled and cleaned.
I say this because over the life of the can you will need to clean it.. Over the years the extra money for the Titanium will be a moot point, and the reduced weight will be nice. I like threaded over non because then i don't have to put that mount on all of my guns and can use an adapter and thread them all and put thread protectors on when i am not using the can. The prices are about the same, given that you will use it for more than 20 years. (price divided by 20 years) Not to mention the money you will save on Hearing aid batteries by delaying the need for getting hearing aides.