Well, I think the 'best' is probably considered to be Victoria and Alberts, but that doesn't always suit everyone's taste, or budget.
There are dozens of table service restaurants at WDW...probably close to a hundred. We need to know a bit more about what you're looking for, in order to suggest something for you.
Are you looking for gourmet, or something a little more meat-and-potatoes?
What price range are you looking for?
Kid-friendly, or intimate/elegant?
Any particular cuisine? There's everything from African to Moroccan to French, places specializing in seafood or steak, just about everything you could imagine.