I tried Stevia in the US and I didn't like it. It has a licorice aftertaste which I don't like. The best alternative for sugar I found was Splenda which emma69 mentioned. It is made from real sugar with a small change to the molecular structure so that the body can't digest it. It is mixed with fructose to become a powder and therefore has some nelgectable calories. It is still seen as a zero calorie product in the US because it is under certain limit imposed by the FDA.