Senior,
As others have said, VH is top-notch. I think that Mata Chica as well as Portofino are too, just without the same kind of accessability as VH.
Xanadu is a great smaller property, so I wouldn't cross them off the list. You would probably get more one-on-one attention from them, (although customer service is great at all.)
If you can swing it, the Turtle Inn is superb.
Have a great trip.