I like to get individual serving cups, mainly because I don't really bake that much and a whole jar of applesauce generally gets wasted....

I get no sugar added sauce, nothing but apples and a little C to keep it from getting brown. If you feel you need sugar or can't find it without, at very least do not get a kind with any corn syrup. Whether or not you care about the process that makes it or what it may or may not do to you, it will make your baked goods a bit rubbery/chewy if you use applesauce that has corn syrup.