As others have said the difference in the dues between OKW and BWV is $.50 which comes out to $150.00 more per year or $12.50 more per month for a 300 pt contract--not a real significant difference especially considering how many more amenities you get at BWV and BCV vs OKW. Like being able to walk to 2 parks, numerous great restaurants right outside your door, nighttime entertainment, valet parking, room service, great pools with slides and life guards, etc. Also as others have stated the dues at OKW are now $.50 lower than BWV, that may not stay that way. OKW had a significantly larger increase in dues for 2003 than BWV or BCV did. This might very well continue and the dues may very well someday be equal to, be less than a $.50 difference or maybe even higher than BWV & BCV. No one knows. Do not pick your home resort based on the dues, it is not enough $ to really make a difference.
OKW does have the largest units, mostly the 1 BR. The studio has a very small size difference and so has the GV at OKW vs BWV, BCV & VWL. The 1 BR at OKW is a very nice size unit.
Pick your home resort by the atmosphere, the location and the amenities offered at the resort. If you want a quiet, laid back, all units facing a parking lot, not conveniently located to anything and less amenities available to their guests than the moderate resorts, than OKW might be just what you are looking for. If you want a top shelf deluxe resort with full deluxe hotel amenities available to their guests and a resort located in a prime, convenient location then BCV, BWV, VWL might be more to your liking.
All the DVC resorts have their fans and they all also have those that do not like them at all. What appeals to one person might be the total opposite of what appeals to someone else. Check them all out and decide which best suits you and your vacation wants and desires. Good luck!