I hated the mid part of sapiens, loved the first half and am still processing the last bit, but I'll say it's the best among all three.
This might be because the first half is hypothesis and theories and the last bit is a vision for the future, a guessing game.
But the real ordeal is labouring through the mid section, which is the reality. As comforting as reality might be, it's f boring for reasons inexplicable.
For those who say the future vision is exaggerated, I agree a little but for lack of better knowladge accept the theories which seem plausible and reject the absurd ones. At least for now ',)