I like them all - but probably OKW - I just like more room - especially in a 1-bedroom and up.
now if you are talking studios and they are great for singles - then BCV, VWL, OKW, BWV in that order.
the studios at BCV, VWL and BWV plus the new SSR - have a queen bed and a sleeper sofa - OKW just has 2 queen beds - the bed and sofa is better for singles.
You can walk over to PI/DDW - from OKW - it is not far - or boat or bus there.
BCV and BWV you can walk or boat to Epcot/Studios - which is great for the food and wine festavial Oct and Nov. this is also a nice place for the flower and garden festavial in May.
I decide what park I am going to the most - then I stay at a
DVC resort close to it - but only if I am staying in a studio - so if I bring guest then it is OKW.
So if the main part of WDW park is going to be the MK / Epcot - then VWL.
if the main part is Epcot / MK or Epcot /studios then BCV or BWV.
if the AK or DD/PI then OKW.
I would go with what you like - if action then BWV is in the middle of it. BCV is far enough away that you can get to the action easily but it is not in your face. OKW if you want someplace that is in the middle of WDW but feels like it is a thousand miles away. VWL if you love WL then you will definitely love VWL. It is so beautiful - you can sometimes see deer from your balcony there.
It is also the only DVC resorts that is also a MK resort - so you can see the Electric Water Pagen each night from its beach.
they are have some great things to love about each and every one.
if you want to go the first two weeks of December and stay at VWL or BCV - then I would buy there - this is probably one of the most popular times for DVC's. the crowds are small, the points requirement is low, all of WDW is decorated, and the place is beautiful.....but Epcot and the mK have special programing going.