Ok, after reading the boards for a while, and playing with my own syrup here, I saw a reference to adding Cream of Tartar to the syrup. Is this a lower cost item that I can easily get to add a bit of mouth feel to my syrups to make them more like soda? I know some say to add some Mali-something, but I'm not sure where I can get that cheaply.
I'm about to make some more syrup soon, including a mix for cherry cola. If the tartar works that well, might try it in this batch and see if it tastes better than just concentrate, sugar and water.