In reply to Capt. Spacey:
As victorclimber says, stick with Camping Gaz. I get asked about all sorts of bizarre gas systems for Greece and Sicily and keep having to explain all that expensive Snow Peak/Coleman etc stuff is unobtainable whereas Camping Gaz or a local cheapo variant is everywhere.
You can buy adaptors for the Camping Gaz valved cylinders with the clip system to adapt to screw cartridge and better still an adaptor from pierced cartridge to screw fitting.
Mostly it´s cheaper just to buy an unbranded cartridge stove with a 6-pack of cartridges in the local supermarket and dump it!