Every on-property visit we've made since December 1999 has been at OKW. We fell in love with it as guests of DVC members, then we joined DVC. Although we own points at both Boardwalk Villas and Saratoga Springs, OKW is our fave.
I think we'll use points to stay at the Poly or the Contemporary sometime in the future, but the last few trips we've taken have been with lots of friends and family, so we'll wait for when it's "just the two of us" on the trip.