We own most pts at VWL, and for the 1st few years we always stayed there, no where else. Then as time went on, for various reasons, started branching out a bit, staying at OKW 1st for saving pts, then gave BCV a try during marathon week for close proximity to Epcot, SSR, AKV, BLT and finally got into BWV by buying pts for F&W fest. I think for us, VWL will always be number one in our hearts, and though its been a few trips since staying there, we always know we have that 11 mos mark to hit at the right time, say Dec for the decorations.
So with that being said, I would say buy where you feel like you would be willing to stay more often than not. 11 mos is important certain times of the year, mostly during F&W fest and holidays, and low pt seasons for the smaller resorts.