Well, BWV is my home (but that's not why I prefer it). We originally bought into
DVC because of a stay at the BW Inn. I had tried to get AP rates at the yacht club first, then the beach club and BW was my third choice. Frankly, I was a little disappointed that I couldn't stay at the YC/BC since they have such a big following.
The second we checked in at the BW, we were in LOVE. It's what made us check out DVC in the first place, and I don't believe that if we had stayed at YC/BC that we would have checked out DVC at all. It would've remained one of those mysteries that we never looked in to. We love the atmosphere, have gotten to know one of the CM's on the BW and whenever we are there he remembers us and gives us a big warm greeting. We love just being there... it gives us that great big warm "wow, we are on vacation" now feeling that nowhere else at WDW quite gives us.
We have stayed at BC since then and I was extremely disappointed in the resort itself (DVC spoils you), but when BCV opened, I really wanted to try it (because I had also been disappointed with some aspects of the WL but the DVC there made me add on some points, that's how much I loved it). We did give it a try and we did swim at SAB but overall, it just doesn't have the "magic" of the BW for us. Yes, it was closer to Epcot but it felt MILES away from MGM, the boat dock, SAB, everything else. I know people complain about that at the BW but for us, once you pop out of that door, everything is right there. Short walk to Epcot, short walk to MGM (you just go out the back exit of the BW), the pool, the shops, the restaurants. BCV is a beautiful resort, but as someone who was lured into making a very expensive purchase by the BWV, it was just lacking something for us.
However, I am a firm believer that you never know unless you try and I was eager to try BCV, had a wonderful time (can't even say we were disappointed), thoroughly enjoyed our stay there, but given the choice would choose boardwalk over bcv. That said, bcv is a great second choice for us if we want to stay in that area.
Hope that helps,
Lisa