We have stayed at all the moderates except POFQ. I don't think you can really go wrong with any of them.
But, if we had to pick a favorite, it would be POR. Very beautiful resort. Spread out so it so peaceful. Best food court and best quiet pools of the moderates.
Our son has outgrown the main theme pools, so we don't take that into consideration anymore. We go to Typhoon Lagoon instead.