To answer your question Billy, regardless of the brand name, all butane fuels are used for a common purpose.
However, they are not all the same. Some have different refinement processes while others use different "recipes" to produce the final product.
I was looking into what Bloody had said about 'King' ... and if you go to their website, they have a carton on sale now for $19.99 for 12 6 oz. cans (normally $47).
Lava is the best, hands-down, but right now it is nearly impossible to find ...