I don't like the taste of artificial sweeteners in soft drinks. In hot weather I do like a drop of squash or something in my water (often fizzy water), and used to look for the High Juice drinks, which didn't have sweeteners, but now almost all the regular squashes have replaced sugar with sweetners. So far, Roses Lime Juice is still sweetener-free, as are some of the more expensive cordials such as elderflower etc. A good quality cordial will still taste good even when it's very dilute, so I don't actually consume much sugar this way.