Mountain High yogurt has no HFCS. It's pretty tasty. My favorite is plain greek yogurt (no sweetner at all). I add frozen fruit that I have defrosted in the microwave (it gets really good and juicy) + my favorite sweetner (either agave syrup or xylitol). Yummy!
Andersen-Erikson brand doesn't have HFCS. It is about the only brand I have found that is decent tasting and has no HFCS. It only has 80 calories for 6 oz. It is very good and has MANY great flavors! I;don't like the greek yogurt, and I couldn't eat the plain.