Definitely depends on your kid's likes. Goofy's is something we LOVE - but we do dinner there. It's great for girls AND boys! Lilo & Stitch is one of our favorites too - but consider Lilo, Stitch, Minnie, Daisy, Pluto, and maybe Goofy - will that work for your son? Storyteller's we also love - if your daughter loves animals, this should be a hit as well, from my experience most of the boys love this one.
We took our nephews in February and did all the meals - one 7 (one month from 8) and one 5. The boys preferred Goofy's and Storyteller's and the oldest thought Lilo & Stitch was a little too girlie and wasn't real interested in learning how to do the hula...
Menu - Goofy's buffet is my favorite and so far has beat all the others with all the kids in our family too.