Writing style.
I am down for any book, as long as the author can play with the language. It can be long winded as Wallace, or poignant like Vonnegut, or poetic and soft like Haruf, or dry and almost scientific like Asimov, or logic bending like Pratchett, but all these authors can use language like an instrument. This property doesn’t make a book easy to read, but makes it most definitely worth my while.
Everything by Le Guin is pure gold! I will add this one to my reading list, but I lived “The Dispossessed “ as political science-fiction, while “the left hand of the darkness” explores gender and prejudices, and “earthsea” is a series of coming of age novels. Every is so good