BLT, because it is one of the newest resorts, will expire in 2060. AKL expires in 2057, SSR is 2054, and many of the others are 2042.
In addition, the Maintanence Fees at BLT are currently lower than other resorts, $3.67. This will help to offset the price somewhat. MF will always go up so there is no guarantee the gap will always be there but it is something to consider.
You get to book rooms at your home resort 11 months before your trip. Owners at the other
DVC resorts can only start at 7 months. If you travel at peak times (December) this could be very important.
In addition, the BLT 1 bedrooms have 2 bathrooms and will sleep 5 (there is a sleeper chair in the living room).
Since you have stayed at the Contemporary, you know all the advantages of being close to the MK, and it sounds like you feel the same way I do. I just love it!!!
When I really began investigating this 6 months ago, I kept going back and forth about the price. That is why I decided to buy in with only 50 points at VWL through resale. It was my 2nd choice resort and by becoming a member this way, I could add on at BLT with a smaller add on (members can add on with as little as 25 points vs. new members buy in at 160).
Of course, it took me only a week to buy in to BLT and I have to say, have not regretted the decision one bit!!!
But now, I KNOW that I will always be able to have at least 5 nights at BLT each trip. And I can always try for additional nights at the 7 month mark using my VWL points.
Good luck!!!!