I'd likely go for Golden Vault, as I'm generally interested in adventure anthologies.
Phandelver piques my curiosity, but if it's mostly just an expanded version of the locales in the beginner boxes, I'd pass.
I'd flip through Book of Many Things to see what it is, though I fully expect it will be a book about things. Specifically, many things.
No interest in the Giants or Planescape books, on account of the topic and the format, respectively.
This is all moot, though, for the same reason others have noted.