DisneyWorld--Polynesian Vs. Grand Floridian with Kids, Which Is Better/more Fun?

Cant decide between poly and floridian. My first choice was the poly but now I find myself going back and forth. I like the tropical feel,closeness to the monorail station to Epcot of the Poly (that Floridian doesn't offer),but don't know if the hotel itself is run down since it is one of the originals?