We've eaten at Mama Melrose the first two times we did the Fantasmic Package, and we chose it again this morning when we made ADR's. The first time we went, the food was FABULOUS, and the atmosphere very Billy Joel - "I'll meet you anytime you want, at our Italian restaurant".
The next time, the menu had changed, and the new dishes were somewhat lacking by comparison. It wasn't bad, by any means, but it wasn't nearly as good as we remembered, either. It was also much more crowded and noisy.
When deciding for this trip, we felt like H&V was a poorly reviewed buffet, and we have MORE than enough buffets with all our character dinners. Brown Derby looks good, but we can't see wasting 2 table service credits on eating at DHS, particularly at the times that have been coming up for the package. (We got stuck with 3:50 for dinner at Mama Melrose!) So, we went with Mama Melrose again, just for the variety in our ADRs.
Good luck deciding!