If you are going to go every 3rd year, there is no questions
DVC is better than renting from Dis. Even renting other people's points is a better alternative to renting from Dis. I look back and cannot believe I paid 4,600$ for 10 -11 nights at the BW one time. DOOOOH. That could have been nearly a 50 point add on.
The diff between SSR and BLT is over 30$ right now. (If you are paying cash )
SSR right now is about 69-72$ resale and BLT is almost the same as from Dis. just over 100$. It makes sense to buy direct for BLT, as there may be an incentive, and quicker closing free year points or something. SSR is better resale no close second there paying cash.
I went SSR, I cannot make ressies 11 months out hardly ever, I cannot justify the difference of BLT, (actually BCV for me). I couldn't not justify a higher price per point for something I do not know how often I could take adv of. I also wanted to go to D Land every few years, which wouldnt matter where I bought points. I love BW, BCV, BLT, and I like SSR. (I have never stayed OKW, or AK). I couldnt justify 5K more for something I may or may not take benefit from, noting the "negitive" alternatitve is still a beautiful view at SSR. I think of it as I get a "free upgrade" when I can take adv of BCV with my SSR points. .. So far I have always gotton what I wanted, with being open to my 1st 3 choices. BLT, BW, and BC. I think us going off season and 1 -bed vrs studio helps. I have my next ressie for 1-bed room BC 08-29 - 09-05 just before daughters 1st day of KG.
If you got SSR, how do you feel about it. Even if it is 1/2 the time. Are you okay with this, or will you feel like you lost? If you are okay with it.. Go SSR. If you are not okay with ending up there .. go BLT. If you are spending 15K for something you want, spend 20K for something you really want. Also you have to make ressies at over 7.5 months or it doesn't matter where you buy. The points are all the same at the 7 month window. If you are making ressies 4-6-7 months out now, go SSR it doesn't matter anyway.