I don't think you should buy either? You should consider SSR for these reasons 1) Maintenace fees are cheaper than OKW and AKV
2) Besides the 11th month window there is no advantage to owning at OKW and AKV 3) SSR is still new and many more years on the Disney lease.
Other things to note 1) My family and I travel to Disney in May and late August and we never have any problems getting reservations at the resorts we want to stay at 2) We have paid off our interest at SSR and the price of the monthly maintenace fees are an issue with us and this is why we won't add on with AKV 3) We bought a
DVC to use at Disney World and have no interest trading our points with Interval International to travel else where (we don't see value in this)
Just our 2 cents.