I think calling the units at BWV "tiny" is a bit of an overexaggeration. Realize that at minimum, those tiny units are the same size as the largest regular hotel room anywhere else on property (which average close to $400/night rack rate). A 1br unit is twice that size and a 2br unit is about 3x that size. For us, the luxury of even a studio 3-4 times a year is more than we ever thought we'd be able to afford. A larger unit is just complete heaven.
As far as those units not having a dining area, they do. Perhaps Rich thinks they are too small, but they are there. You should check out the floor plans of the various room layouts on the
dvc website so that you can see for yourself what the layout is.
I also disagree that BWV rooms are only good for sleeping. If I was only interested in sleeping I'd save myself even more money and stay offsite for $20/night. We recently took a trip where we invited some friends along and we had a great time playing games, watching movies and having dinner in the 2 bedroom unit. Some nights we just hung out around the boardwalk, had an icecream, and watched the buskers.
Other times we were able to walk back to our room from Illuminations without having to make our way all the way to the front of Epcot with the masses, wait for a tram or walk back to the car and then drive that short 8 minute drive back to OKW... we could just stroll away from the crowds and be home in 5 minutes.
I definately think that unless you are intending to buy direct from Disney that you should visit all of the various options before making your decision. For us, BWV is quite luxurious and we love the atmosphere. We bought into DVC JUST so we could stay at the BW all the time. You really need to figure out what your own personal priorities are and purchase based on those. I've read too many people who have bought at one resort sight unseen and then later decide they like another resort better. For me, the purchase decision is just too important to make without visiting all of the available options and getting to know for myself what works for me and what doesn't.
Lisa