Very easy and delicisous. I would recommend the one with biggest cannister so you don't have to refill as often

I love the soda stream tremendously. I use it contsantly throughout the day. I suffer from dry mouth from medication so I really am drinking 24/7. This machine has made a huge difference in my life. I can control the carbonation. I am no longer dealing with empty cans and bottles. It makes my tap water taste great. The two bottles that come with the machine are perfect. I just rotate them out of the fridge throughout the day.

It's a very nice product and overall great idea, however for what it is, it is somewhat overpriced. Having said that, it is easy to use and takes no time at all to produce a couple liters of drinks. My preference has always been A&W diet root beer, so I was afraid the soda stream variety might not taste as good. Not so! In fact, it tastes BETTER than the A&W brand! It is definitely a money saver over the cost of buying soda in a grocery store, so for that reason alone it is worth purchasing. I'm very happy with mine!

I bought this for my wife for Mother's Day because she's always drinking seltzer water. Buying it in cans has started to get very expensive, with prices as much if not more than Diet Coke at times. With this unit, we get filtered water from our refrigerator and carbonate as we need for a much less per liter than ever. We're not using as many aluminum cans and because we're using a Pur filter in the 'fridge, we're more confident about the quality of water than ever.