We got this machine to make sparkling water instead of drinking a soda or something unhealthy. It's is super easy to use 2 flavors, we can combine or use one at a time. 3 frizz levels, I always use the highest one as that tasted just like the store bought one. Setting up is pretty straightforward, comes with two cylinders. The refills are a little expensive but we would be spending same amount in purchasing the sparkling water from store.