As we drink quite a lot of soda, we decided for the Soda Stream tentatively. And were not disappointed, the Crystal is not only visually good, technically. Unfortunately, there were only 3 carafes so. So if for reasons of hygiene as we did the cleanse in Dishwasher with 2-3 bottles a problem. Therefore, we do not have this ordered with spare cylinder, which was personally benefit me. Although one notices when the CO2 output of the cylinder decreases, but like the now not exchange before it is empty. And, as I had already thought, with my luck Saturday evening was empty. Who still would like to get dressed and to the supermarket, electrical store, etc. to drive and replace the cylinders, certainly very few. Therefore, I find it very convenient to always keep your home have a full cylinder.