I'm pondering the same thing myself. We stayed at 2 BR BCV (6 of us) for 5 nights and absolutely loved it:
1. Tons of room. We never felt like we were in each other's way. My mom had her own room and bathroom. Me and DH had our own room and the kids ruled the living area & TV ( just like at home)
2. Jacuzzi bath. Ahhhhh!
3. Washer & dryer really comes in handy.
4. SAB
5. Kitchen made it so easy to prepare breakfast and snacks/light meals without the big expense.
If I had to list only one favorite attribute of BCV it would be the space.
Having said that...I'm wanting concierge on our next trip in 2004. Don't know why, but I want to be doted on. Want to come out of my room in the morning and have breakfast all laid out for me. Want to feel pampered. Want the CM to say "Good morning, Mrs. Moreno. Enjoy the Magic Kingdom. I hope you and the family enjoy those PS's we made for you . What?? A spa appointment today? No problem, I'll take care of it for you".
Just a little fantasy I enjoy from time to time. So maybe I'll split our stay!
BTW, we had an awesome Epcot view at YC our first year there. The Epcot views at BCV are very few and not guaranteed. I also heard they're not that special. We had a view overlooking Ariels Courtyard at BCV and really enjoyed it.