Try going with natural ingredients as much as possible. Never give kids sugar free stuff. There are so many side effects from this stuff. If you remember Saccarine caused cancer after it had been used for a few years.
All of these artificial sweeteners they are coming out with in the past few years do not have long term studies done yet because they have not been on the market very long. When the kids of today grow up they may all have deformed kids or something from using too many artificial sweeteners as children...I know that sounds silly but it could happen.