We were in the same boat a number of years ago and bought at BWV just because we wanted to buy and BWV seems alot more readily available as a resale than BCV. We thought about adding on at BCV recently when we enjoyed a recent stay there this spring, but again, found resales very sparse and expensive. In the end, I am very happy with our resales at BWV. The standard view allows us to go and use minimal points, but we can also splurge on a GREAT and I mean GREAT view on the boardwalk. Our DS is very young and we are able to watch fireworks while he snoozes away in the room. It's well worth it for us. However, we stayed at BCV recently, as I mentioned, and loved it there. For us, our DS likes to swim, but he only knows what we tell him. We just didn't make it to SAB, so he has no idea it even exists. It was actually darn far from our room at the villas to get there so we enjoyed the villas pool alot while we were there. Nothing wrong with that.
I did find BCV alot closer to EPCOT versus BWV, but in the end not that big of a deal.
I also really enjoyed the parking situation alot better at BCV than I do BWV.
We bought because we found we were going to Disney 1-2x a year and spending alot of money on deluxe resorts. Even though we were using codes back then (very minimal codes these days), we still see the savings versus the hotel costs we would incur.
If you are ready to buy, start watching the resales and be prepared to jump on whatever comes up...we did and aren't disappointed. You sound like us - we just love the boardwalk location and there are pro's and con's to BWV and BCV. Whatever you buy at you will most likely be happy with. We are still able to stay at all the
DVC resorts while being owners at BWV, including the 7 month rule. That may change down the road, but for now we're pretty happy.