We were faced with this same predicament....We love BWV and wanted to spend the majority of our time there. We are in the middle of purchasing a small (25 point) contract at the BWV and had the intention of doing small add ons periodically. At the same time, we were torn with buying from Disney because of the SSR point promo, the extra 12 years, the lower dues & the ease of purchase through them. Not to mention, we love the rooms, and feel that it may be a better resort chouce for us once our DD goes to college.....
Well, after a major family pow-wow, we discussed our original plan and my DD & DH decided that while, yes, we would like to stay at BWV as much as possible when we visit, we'd also like to try the other DVC resorts as well.
We all concluded that not one of us would be devistated if there was no availability at the BWV and we had to stay elsewhere....We're the type of people that are just thankful to even be at WDW....
So, we ended up purchasing SSR from Disney, and are still going with the little BWV contract as well.....We're waiting on ROFR right now & should hear back any day now....If Disney chooses to ROFR.....great, we'll buy more SSR points, if they don't....great, we'll buy more BWV points.
So, the bottom line is.....If where you stay is your primary concern, buy that resort.....If not.....go with SSR.....