If you want the flavor without any sweetener, try
http://capellaflavordrops.com/
They also sell a sweetened flavoring (with Splenda).
With these drops, you use much, much less than flavored syrups. So about 3-4 drops for a cup of coffee.
I buy the unsweetened kind. My hubby likes the sweet stuff, so he just adds Stevia to his coffee with the flavor drops.