So I have a few questions about butane refills. So I bought a can of Xikar butane to refill my Ronson Jetlite. Didn't use the whole can, and the fill should last a while. Is the can going to still be good when I need to use it again? Like it doesn't go bad, or slowly leak out or anything right? Also, anybody notice any difference between brands, say like Colibri, Vector, and Xikar? They're all more refined than the Ronson butane, so it seems to me that they should all perform the same and just pick up the cheapest, but if one makes a difference I would rather use that.