If you are trying to avoid all the aspartame in diet cokes, I would get Bubly and add the Stur fruit or lemon concentrate to it. It is Zero points and has a great flavor. But, if you want a great premade soda, you gotta go with Blue Sky. It's zero sugar and has a great flavor. Virgil's zero sugar made with stevia has a really good Orange and Lemon Lime soda, as well, but can be pricey. Those are my two favorites. Other than that, I just buy water/tea and use the Stur brand or Sweet Drops to make it taste good.