Favorite sci-fi book/series of all time?
Looking for something to read after Light Bringer of the Red Rising series. 
Discussion
Piers Anthony Phase and Proton books are pretty awesome, that's the first thing that pops up when I read the question
First Law Series - Joe Abercrombie
Dune and Hyperion for me
I was about to say the Ian M Banks books - I just hoovered them up - but i was a kid and I wonder now. Might have to go and reread them. The Culture was a kind of utopia but I think the main characters were usually outsiders. I suspect I might find The Culture a lot more dystopian now. Maybe it always was and I needed to grow up
Bryce O’Connor - Iron Price + Fire &land Song (Warformed: Stormweaver Series) is a combo sci-fi fantasy series, best I’ve ever read
Martha Wells - Ally Systems Red
Rob J Hayes - Titan Hoppers series
Adrian Tchaikovski - Children of Time series
Andy Weir - Artemis
Andy Weir - The Martian
Erwin Scott Card - Ender’s Game series
Jamie McFarlane - Privateer Tales Series
Fire and Song**