I tried and now am addicted to
Farmer Boys Greek Dressing. It has only 25 calories per serving and one serving is enough to toss in with about 4 cups of lettuce flavoring it nicely. I love it so much that I just ordered a case of it by mail since it is not available here in Tennessee.. I got a bottle of it for Christmas from our son and DIL who both are also addicted to it.
All I can say is that it is by far, and without reservation ... the absolutely best salad dressing I have ever had the absolute pleasure of tickling my tastebuds with..
Since I am still pretty new I am not sure about posting links, but you can google it and bring it up.. You will find the nutrtion info on their sight too.
Check it out !!