I really enjoyed Project Hail Mary.

The Expanse series has done it for me. Best books I've read in a long time.

• Three Body Problem (and sequels, especially The Dark Forest:) it's good scifi, though I worry that a lot of people missed the message.
• Consider Phlebas/Use Of Weapons: tragic space opera is my favorite kind.
• Gideon The Ninth: sci-fantasy popcorn with a sass-mouthed narrator.
• Providence: Fresh take on ubiquitous scifi tropes, and I'm a fan of Max Barry's punchy writing style.

For me it is Foundation series because I like it's themes and how they are presented, I really like some characters like Mule and Hari Seldon and it is very interesting to read.

I really enjoyed the 'Foundation' series by Isaac Asimov. 'Rendezvous with Rama' by Arthur C. Clarke is a great one as well.

My favourites are (still) HitchHikersGGTG and Good Omens. I just adore that writing style, I guess.

I'm currently reading The Left Hand of Darkness, and so far enjoying it a lot.

I'm a big fan of world building and well fleshed out settings and characters. I love getting lost in descriptive and unique imagery.

• Hyperion by Dan Simmons - feels like such a lived-in universe, some interesting tales, and a horrifying antagonist in the Shrike.
• Neuromancer by William Gibson - cyberpunk ahead of its time, great story, incredible atmosphere.

“The Dispossessed” by Ursula K. Le Guin is maybe the best political sci-fi book I’ve ever read. Cory Doctorow’s “Walkaway” is also quite good and feels a bit like its spiritual successor.

I haven't read Quantum Magician but certainly agreed on the Three Body Problem and Children of Time. Fantastic books.

Some others I really like:

• This Is How You Lose the Time War - short, poetic. Love it.
• Red Mars trilogy and really anything by Kim Stanley Robinson. Oh also in particular The Years of Rice and Salt
• Diaspora by Greg Egan and also much of his other stuff
• Player of Games and Use of Weapons from Ian Banks' Culture series. Haven't read all of them yet.
• Ancillary Justice