If you're looking to avoid sugar all together, I prefer NuNaturals stevia, as it doesn't have a bitter aftertaste like other stevia products on the market. (detoxinista.com)
Some brands of stevia have a bitter aftertaste, so your best bet is to stick with either a stevia glycerite or a granulated form like Stevia in the Raw. (cutthewheat.com)
This organic stevia is based in an organic glycerin, is certified USDA organic and does not have a bitter aftertaste like most stevia. (freeandnative.com)