I use plain Torq, which is pure maltodextrin powder – mixed with squash. You can even have it on its own, it tastes almost like water. For races, I like Torq flavoured which has other stuff in it including electrolytes but it's not a big deal really. The carbs are what's important. It makes a big difference to how far you can ride. For me, it easily triples how far I can ride hard. It's just liquid food really, but easy to digest whilst exercising.
Mix it lower strength if it upsets your stomach.
Also it's not full of sugar, it's full of maltodextrin which doesn't cause as many problems a sugar.
TJ will be along soon to tell you it's all a load of rubbish and you are imagining any benefits.