My wife and I are still avidly making our own diet soda pop.... we buy the carbonation and mixes from Soda-Club. The diet cola with Splenda is, in our opinions, far superior to diet Coke and diet Pepsi. The diet orange is awesome too. It's great that we can adjust the mix up or down to suit our tastes. I know it's not cheap to buy the equipment, but after the initial investment, it's much cheaper than buying soda at the stores. And, it's easier than lugging tons of cans and bottles of liquid home from the store. If any of you try it out, please come back and post your comments here.