I make my own soda from scratch and it is delicious. Target carries a wide variety of sugar free powder drink mix and their flavors vary from time to time. They do have a trace of aspartame but each envelope of powder claims to make 2 quarts of drink but I find it tastes much better if I make 4 quarts per envelope and then carbonate it. Last time I computed my total costs, I think it came out to about $0.13 to produce 2 quarts of soda so it is very inexpensive as well as a great taste.
