Impossible to select the three best, because there’s such a tremendous variety in the genre. It all depends on my mood at a given moment. My wife and I have well over 4,000 science fiction and fantasy books in our house, and have probably read as many again that we don’t own copies of.
“Impossible to select the three best...”
I’ve always disliked the “3 best”, “10 best”, “etc. best” categories about any given subject. Science fiction throws a very big net.
I did miss it if anyone mentioned “I, Robot”. which is another good series by Asimov.
I have a time coming up with the three best SF authors.
Who can be left out?