I'm curious why you like these so much as titles. Tastes differ, but in my opinion, "A Scanner Darkly" is the only standout winner here.
Without knowing anything of what the story was about, would "Do Androids Dream of Electric Sheep?" convey anything important to the reader? Even as a standalone metaphor it's confused: humans don't dream about sheep! There is an old trope of counting sheep to fall asleep, but that's not a dream.
In any case, we're now thinking about sheep, not a noir detective story set in a declining post-biosphere world.