Going back a few years now, my grouch with our local NW and soda stream flvours, related to them all having artificial sweeteners, or at least the ones they stocked. In the end my kids decided they liked my homemade lemon cordial used with the soda stream machine. I bought some Roses Lime and bitters, and comboned with my lemon, and some experimentation, found you can make quite a good, lemon, lime and bitters. At least you know what is in your drink that way.
Kaye.