We've liked Marley's and Red Fish. Alexander's and Garden Oak Grill are also nice, but a bit more pricey. Hudson's IS great -- be sure to check it out. Old Oyster Factory is a favorite with a lot of people, as well.
When you check into the resort, ask them for the restaurant guide. It's a magazine-sized guide (printed on newsprint) that has menus (and most often prices!) for MANY restaurants on HH.
Be sure to check for early bird specials, too! They can be great, as well as a good savings!!!