Sodastream ideas?

I have had one for over 5 years and still use it frequently. However, after I went through the sample syrups that came with it I started using simple extracts, lemon, orange, strawberry. All natural and I don't add any sweeteners. I prefer a no calorie carbonated drink with a light flavor, very refreshing to my tastes.

You can buy the natural extracts at Red Stick Spice, WF, Fresh Market and a lot of regular grocery stores. To me all the flavoring syrups were just too heavy.

Thanks for the replies!
ll give both a shot.