I have been using the Soda Stream Water Carbonator for a week now and love it.
I love that I can carbonate my water at an affordable price.
The initiation is pricy but you get everything you need to start saving. The CO2 cylinders recycle @ ~ 17 $ at Canadian Tire ( or other outlets ).
I did however find on-line an adaptor that will allow for even cheaper refills from lets say a scuba shop, or paint ball POP's.
This adaptor is 60.00 $ as the cylinders give you about 60 Litres of carbonation, it will take about six months to make it pay for itself.
I was using the "Twist and Sparkle" carbonator, what I still love about this gadget is that you can carbonate juices... seems there was a recall regarding this product, I suspect it was not used correctly as I have carbonated at least a100 times with no issues, or maybe I am just lucky.
You can not do this with Soda Stream, the back pressure reacts with the sugar when you release the bottle and it volcanos.
So this is the model I got ( it was the last one on the self at Canadian Tire as a starter kit )
Soda Stream Source. It was priced @ 149.99 Canadian Tire so I got a deal.
It came with 9 sample syrups which are good, but not too exciting. They are low on calories as sugar is used in conjunction with Acesulfame Potassium and Sucralose @ 35 calories for 1 Litre. As well as completely sugar free using only Acesulfame Potassium and Sucralose.
I am not excited by the recipes ingredients but what the hell try em out. They are on the average OK.
I prefer the citrus combinations as it masks the artificial sweeteners, and will start making my own syrups in the future or simply add all natural fruit juices @ 1/4 cup per Litre.
I use tap water, that is chilled over night and use high carbonation. Yup, you have a choice of 3 carbonation levels, that are indicated by a LED light on the front of the dispenser, so its nice to have that choice.
Its an Old World Type product brought into the 21 Century .... YEH !
So I give the hardware an A. Easy to use, quick simple very little setup, convenient and cost efficient.
The Soda Stream flavours a C for convenient flavour.
BTW, the recipe for 1 Litre of carbonated water is 52 ml of syrup, just in case you were wondering ;)