We enjoy Mama Melrose's, but absolutely love Palio's.
Palio's is more on the level of California Grill, Jiko's, Flying Fish, and Citrico's and while Mama Melrose's is nice it's not at the same level. So it depends on the dining experience you're looking for.
Almost forgot, I would also recommend Portobello's at Downtown Disney. We've never been disappointed there.
Have a great dining experience whevever you end up going!