I own at BLT, but basically I'm pretty much open to try all the resorts. Have stayed at AKV in a value studio which I booked about 2 months before the stay. On our upcoming trip next week, we stay in a 2BR at VWL which I booked at the 7 month mark. Another trip is already booked for Jan. for a split stay in a studio at AKV and a studio in Vero, which I booked last month.
Next month, the 11-month window will open for another planned stay in Sept. 2011 where I will book 3 studios at BLT but hope to change it to a 3BR either at OKW or SSR once the 7-month window opens.
As long as you can be a bit flexible, I think it doesn't matter too much where to own.