A.C.
My husband was looking at one of those too. When we found them in the store, though, and actually started looking at them, we discovered we weren't all that excited about the artificial ingredients they contained. (I know, pot calling kettle black, since "real" pop is all artificial, manmade stuff too.)
We also didn't see very many flavors for regular pop; found a lot for diet pop (and we don't do artificial sweeteners). We started pricing up the price of everything that would be needed to make the pop and decided for what little bit we actually drink soda that we could just buy a can or a bottle here and there.