M.C.
We've done The Little Gym and My Gym. We enjoyed both programs, but there are a few differences. We found Little Gym to be a bit more structured and there was more of a focus on learning/strengthening specific physical gymnastics skills. There was more variety with My Gym and they incorporated gross, fine, cognitive, and social skill development. At Little Gym the classes were divided by semester (i.e. fall, spring, etc.), but at My Gym you would pay for four weeks at a time. I would recommend both programs, but I would encourage you to go to a free "preview" class for each program so you can get a better feel for the differences and what you think will work best for you and your daughter.