I eat maple and brown sugar, sugar free oatmeal alot and it is sweetend with Aspertan*. Is it okay to keep eating it or will it make me gain weight, it only has 100 calories, or should i get the regular kind that has more calories?

No one can answer that question for you.

you've provided NO information

Spend s ome time reading around the forum...

But my own opinion - sugar free/fat free/whateer free are not overly effective in helping people lose weight... eat what you like - make the calories work in your d ay

Try getting the type that has no flavorings at all, the big tubs of them are the best deal, you get 30 servings for around $3. You could also get steel cut oats, which are better for you, but require more time and cost more.

They taste pretty plain on their own, so add some fruit, nuts, cinnamon, etc. to it. It'll taste even better than the store bought version and will be much better for you.