Sometimes, the voice makes the difference. I can't imagine Harry Dresden without James Marsters. I'm 14% through a perfectly good book I can't finish. The narrator is ruining it for me.
Who are your favorites? These are some I found mentioned on Reddit that I agree with.
What things do you read that you go--Nope! And just put the book down? Anything graphically sexual or unnecessarily vulgar turns me off, but the worst thing for me is bad research.
What makes you cringe and stop reading a book? As an author I love hearing these kinds of things.