It makes sense and better than drinks crates

Service
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The device works well and reliably for over a year and after several hundred bubbling events. I can not understand descriptions of jammed devices. If it's too difficult to open after the effervescence, it is easy to press the lever until the overpressure escapes, then the opening is very easy. It is important to fill the bottle only to the mark - as steht- also in the instructions or this will lead to bubble over. In all three bottles, which we own the brand shows exactly 0.5 liters. When operating properly, it is a very clean and easy process.
For us three glass bottles are correct, you should not have too little of it, since only half a liter goes inside. The bottles are offered robust and easy to use and do not look ugly on the table. Here you get the well-fitting closures 100% gas-tight. One should not bubble too long on stock therefore, if the carbon dioxide which have been specially added would perceive when drinking even at full strength.
The replacement of the gas cartridge is also never a problem the first time you take off the rear cover of the carbonating device, then remove the seal at the ready set cartridge, the cartridge leads back from the bottom into the unit and screw it into the top located threaded in the unit. Then if a cartridge is empty, you screwed them out and a new one, the replacement cartridge should always in the house they have is not bad so you can seamlessly always supplied with mineral water itself. The delivery points are depending on where you live, unfortunately not as dense distributed, as one would wish. Incidentally, the Wassermaxx cartridge for '60L' fits well.

Costs
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Among the costs: we have even listed meticulously all Spudelvorgänge a gas filling. It is important to determine all processes were up to the maximum amount of carbon dioxide. We have come to 77 transactions at a price of 7.50 cartridges and 0.5 liters per operation are the 38.5 liters of mineral water to a liter price of 19.4 cents. Writes to the equipment costs about 2000 liters from, then come again add about 5 cents per liter. Even if the device last longer, you can not neglect the amortization of the quite expensive equipment. In contrast, the costs already own water
Discount mineral water is available for 11 cents. As this bubbler is not. I think the Sodastream advertising claims "and save up to 50% cost", "60 liters of mineral water with a filling" etc. simply for completely exaggerated.
You should not switch to a bubbler for cost saving reasons. As a rule, the effervescence will probably cost the same as bottled water at the store.

Why change?
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The main reason for a change is the mineral water sales on returnable / non-returnable bottles, which is completely pointless and unnecessary. Of course there are people who drink only certain waters and like to take it into account that for truckloads are transported over hundreds of kilometers. Our drinking water is monitored intensively and continuously. If you still drinking water that can be analyzed in its own budget comes out of the tap, to ensure that no contamination by in-house lines arise, you have guaranteed a better quality than that of the purchased products. The water utilities provide individual analyzes at either free or at fairly low prices. We pay our taxes for the entire infrastructure of drinking water supply, why should I still laboriously hauling drinking water in the house, but if I really have to turn on only the tap?
We go shopping anyway, bringing the cartridge, with a little planning, does not require additional trips and hauling boxes omitted. The number of trucks on the roads will be less. The question is, therefore, rather, what prevents someone to upgrade? Needs the water connoisseur of a water sommelier you will not be able to convince, for us ordinary people, however, the just want to quench their thirst with harmless mineral water have here a reasonable solution.

Assessment
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Four stars because I believe that the equipment and the cartridges can be expensive and you should find a way to make the glass bottles really gastight