Best advice anyone gave us was that old saw, "Buy where you'll most want to stay. Better still, buy the one you really love."
That way, even if you're thinking of booking another resort at 7 months, you've a pleasant fallback by booking your home resort first and modifying later once you see how available the other one is.
We actually bought in at VGF at off-sale prices and had to waitlist the purchase. Never have been sorry we did that because we knew that was the resort we truly wanted. Any other would have been a not-even-close in appeal.
So, you know which resort is your true love...