While we do not have any flavors that are sweetened with only sugar, all of our regular flavors (non-diet) are partially sweetened with sugar.
SodaStream's slogan is "better for you, better for the planet." To achieve the desired level of sweetness using sugar alone, it would require a quantity of sugar higher than we are prepared to deliver to our consumers. The combination of sugar and sweeteners allows us to create a product that is both tasty, and lower calorie.
You can also view the ingredients label of each of the flavor pages on our site (scroll down). Browse our full flavor selection here.