Years ago I came across a used Dupont and gave it to my father. Even after sending it back to the factory for service twice, it never held gas for more than two or three days. I don't mean to say that's indicative of the entire brand, but I do say you shouldn't smoke!
if ever someone could add the fuel as well, those cartridges are so expensive T_T
but no way I am voting for the palladium one, I bet it's just slightly cheaper than the one made out of vibranium