I bought this after years of the other brand.  I love this so much more!  I drink more water since I don't have to fill a bottle to the line then fizz the whole bottle.  I can get as much or as little as I want.  It's always ready for me to decide if I want flavored or unflavored, and how bubbly I want it to be.  Yes, I am a control freak.  Easy to set up and easy to use!!