I like flavor in my water occasionally, but not sweetness. These have no sweetener whatsoever. They are good, solid, thirst-quenching flavors. They taste just like you squeezed a piece of fruit into your water.
The first time I tried one, I put it in a 20-ounce bottle of water. Way too water-y. But they do well in the smaller bottles that are around 16 ounces.