I was very excited to have the opportunity to try the SodaStream Source. As someone who enjoys sparkling water and sparkling beverages daily, I thought this would be a great way to meet my needs for bubbly beverages! The packaging advertises an easy snap-lock bottle insertion which led me to believe it would be easy to use. Unfortunately, even though I followed the instructions exactly, each time I tried to use it - it leaked. Additionally, there are 3 levels of carbonation. I thought this would allow me to customize my beverages but it didn't really seem to make a difference. Although the water would be more carbonated initially, it went flat very quickly. I really liked that the machine was sleek looking and had stainless steel features. It looked great on my counter. However, that's about where the positives end. In addition to the cons mentioned above, there are a few more... The health benefits of soda-streaming your own beverages advertised were misleading. I was disappointed to see that the drink mixes had sugar, artificial colours, and calories. The sparkling beverages I normally drink have 0 everything and just a dash of natural flavour. So then I thought I could just have sparkling water right? Wrong. I found that the water had a funny smell once carbonated - maybe it was the CO2? It also had an odd after taste.