I actually have two separate questions, but they both are related so I figured I would put them in the same post. I have been thinking of purchasing a CO2 based inflation system such as the Innovations Air Chuck SL. Has anybody used the Air Chuck and have any good reviews on how well it works? Has anyone used a similar product(simple CO2 nozzle inflation system) from a different company?

The second question, does anybody know of the availability of the Innovations threaded CO2 cartridges overseas, in particular Germany? I plan on spending the summer there and figure it will be pointless for me to purchase an Air Chuck if I can not get refills for it over there. The Innovations website says specifically that the Air Chuck only works with their threaded CO2 cartridges. Thanks for the help in advance.