If you haven't read Ted Chiang's short stories yet, do so. His first collection (Stories of Your Life and Others) was my favourite, but his more recent one (Exhalation) was also very good (the title story, Exhalation, is gorgeous). Stories of your Life is what the movie Arrival was based on and (as ever) the story was better than the movie.
As far as sci-fi novels, I have pretty generic tastes for this crowd: Dune, The Dispossessed, The Martian. The Crying of Lot 49 is one of my favourite books. Not exactly sci-fi but close.
I really had hard time getting into the expanse and dropped it in the middle of first book. Heard so many good things about it I was maybe biased but I couldn't stand every chapter being written on the exact same structure with the mandatory cliffhanger just before the next one.
I couldn't get the idea of a book being written following a formula learned in writing school off my head.
As far as sci-fi novels, I have pretty generic tastes for this crowd: Dune, The Dispossessed, The Martian. The Crying of Lot 49 is one of my favourite books. Not exactly sci-fi but close.