The Expanse was truly interesting Sci Fi because it was both Utopian (we get into the Solar System and colonize everything) and Dystopian (class struggles, war between inner planets and belters, and unless you live on Earth life is brutal). What I particularly liked was the Belters trying to colonize on these newly available worlds once the Protomolecule makes the Wormhole(s); and many of them can't take the gravity, or can't even get used to the idea of living on a world with an ocean and a sky. It's got a lot of good stuff.
"For All Mankind" has been the best show so far for me, because they make every effort of get the science right, the whole crew from sets to costumes is trying to make things as accurate as possible. It's great stuff from a Nerd perspective.