I'd say that if you're going to spend most of your time in the parks, go ahea and stay at POP and see how you like a Value Resort.
If you want to spend some down time or pool time at your resort in addition to the parks, I would look towards another moderate (though I personally think Riverside and French Quarter are the best moderates) or look towards one of the cheaper deluxe resorts (AKL and WL are the cheapest) if money is tighter or you're not sure if the you will like the deluxe resorts.
Upcoming Trips to WDW:
Dec 6-10: Disney Wonder
Dec 10-19: Port Orleans French Quarter