For 10 adults, Storytellers might be better. At Storytellers you can order off the menu or opt for the buffet, since some adults want something different than a buffet. Storyteller's doesn't have as much variety as Goofy's on the buffet though. So if you're all going for a variety of food, Goofy's might be a better choice.
For character interaction, nothing in all of Disney (WDW included) beats Goofy's for volume and variety.