[PhilliesFan]

I've stayed in Hawaii, Fiji, Rarotonga & Tahiti and loved them all for various reasons. The Polynesian is a great resort and you will not be disappointed.
Rarotonga is great with kids or older adults. It has location location location. Very convenient to the GCH and pools.
Fiji is a smaller long house and close to the beach. You can also get a side beach view without the added costs.
Hawaii, what more can I say, it's perfect. If you can splurge, do it, the view of the MK is wonderful, especially when you watch the fireworks and electric water parade.
Tahiti is my new favorite. Not as close to the GCH but still an easy and beautiful walk, and a quick walk to the TTC so you can ride the monorail to Epcot. This is a great location for older teens and adults.