Each to their own but we much prefer the Polynesian. Their concierge service is (IMO) a million times better than RPC at the GF. The CMs have always been extremely accommodating (concierge or not).
The real benefit of the Polynesian is the views from the LV rooms. The castle is directly in front of you, along with a white sand beach. Very few (if any) GF rooms have views which compare with The Polynesian's LV rooms.
Also, the newly rennovated rooms at The Polynesian are fanatastic. They have a beautiful new decor with plasma televisions and new patios. The GF rooms were last renovated in 2000!
I agree that there is a slight lack of fine dining at The Polynesian - but it
is on the monorail and it takes just minutes to get to the GF or CR for a whole abundance of alternative restaurants. There is also a short walkway to the GF for easy access to its amenities.
Everyone will have a different experience and opinion but considering the facts, the Polynesian offers the largest (and now newest) standard rooms on Disney property and the most transportation options. The CMs at The Polynesian also have to be especially selected and sent on an extra training course in customer service and polynesian values. It has the largest % of original CMs anywhere on WDW property.
I'm sure you will have a wonderful trip, Cheryl.