I agree that RC is not worth the money. I also agree that the Setai is a nice place and it has a terrific brunch. I would recommend there.
That said, the best restaurant on the beach by far is Hakkasan. I haven't been inside any of the rooms at Fountainebleau, but the property is nice. You are on the beach but removed from Sobe, which may not be bad if you are going to be there 7 days.
I'm not a big fan of Coral Gables for any reason.