Just yesterday I found some flavored syrups at Marshall's that are made with Splenda! I know that some people have bad reactions to Splenda, but I like it and don't have bad reactions. I bought Caramel and Vanilla/Hazel Nut flavors, but they had other flavors, too.
But, that's usually just for a special cup of coffee - my everyday cup in the morning is with lots of skim milk.