It depends if you are on a diet or are limiting yourself to a certain number of calories per day, for me i prefer ice cream, since it's much more flavorful and comes in various types.
The biggest advantage of frozen Yogurt is the live microorganisms that is good for you.You know the good bacteria that helps your immune system. Ice cream doesn't have those.
My preference is icecream as I feel it's much more creamier than the frozen yogurt. I love the milky taste it has and the right amount of sweetness that doesn't get boring. Frozen yogurt is also delicious but I feel it lacks a few things icecream has.
