I agree with Tofi with the making your own dressing. Good gosh, people think I'm insane standing there in the store looking at the back of every bottle to simply leave in disgust because the only ones that are acceptable are pretty gross.

Simple vinaigrettes are easy to make and refrigerate well.

I also make an Oriental themed dressing:
1 serving
1 TBS sesame oil
1/2 TBS soy sauce ( I use wheat free organic Tamari)
1/2 TBS white vinegar (generic is fine)
splash of wasabi (to preference)
pinch of sesame seeds

total carb count minimal but use 1 JIC

It really dresses up a plain romaine lettuce salad

HTH

Nancy (aka the salad nut)