Re: Best sci fi writing ever....?
That is a tough one. I love the first 3 Foundation books.
Larry Niven has some of my favorite. I love his work, “A World Out of Time” and “Inferno”.
Harry Turtledove’s World war and Colonization trilogy’s are good
Kim Stanley Robinson’s Mars trilogy is a great read.
My all time faorite classic is War of the Worlds.
But my favorite Sci-Fi book is “Birthright, the Book of Man,” written by Michael D. Resnick