Resale BLT. Keeps your options open to sell if you aren't into
DVC anymore. It has room to run when VGF2/Poly2 sell out in a few years. The chart is the cheapest that will ever be on the monorail. Heck, maybe they will add BLT2, which I think would be awesome news. The 1BR product is amazing, with the extra bathroom. There's a reason it's booked and walked. The studio is tight, so if you're all studio, then maybe not for you.
I also think there's an argument for CCV if you are more using it for SAP. The contract is so long, and the chart is better than it should be, because it matched the BR chart. There's a lot of CCV on the market and there are deals to be had.
But I think any of the top value suspects (CCV/Poly/BLT/SSR) are mathematically equivalent if you buy the right, loaded contract. That takes time and patience. That said, it would be very hard for me to buy SSR right now, when BLT is not much more. I would probably swap my SSR for BLT right now, if I didn't have to pay taxes on the gain.