I have used Wilton, CK and I also use a powder I buy at my favorite Bake store. I prefer the latter 2 to Wilton, but Wilton will work in a pinch. Also like Kelly, I have used SugarDeaux's recipe. The corn syrup gives the dried icing a slight sheen and doesn't seem as crunchy as regular icing. I am not sure if the corn syrup helps with that or not but I like this recipe.