I can't speak from experience with those suites.
We visited the Contemporary on our last trip and did NOT like it. It seemed dirty. I have a feeling the suites aren't as dated as the rest of the hotel seemed and I have heard good things about their concierge service.
The Poly-I think the suites are in a seperate building from the concierge lounge. Maybe someone else can confirm this. Would this be an issue for you?
I would have to go with the GF. Elegant, close to MK, etc.