The 'Bobiverse' series by Dennis E. Taylor is not bad--first couple of books are pretty good-like many series it declines a bit as it goes on... I can't call it 'serious' sci-fi, just 'fun'- literary candy.

'Children of Time' by Adrian Tchaikovsky is an odd one- mediocre story (your impression might differ) with what I consider fairly lame attempts at being 'hard' sci-fi... BUT it's portrayal of alien intelligence, biology and psychology is pretty unique- in the end that was the only reason I finished the book. (Sort of like the movie 'Se7en' - stupid movie, but worth watching simply for Kevin Spacey's portrayal of pure, content, and calm evil).

I kept hearing raves about 'three body problem' by Liu Cixin- and I was intrigued about the idea of Chinese sci fi... so I gave it a try- aside from interesting portrayals of the Cultural Revolution I found it a complete waste of time. Not worth reading in my opinion... I certainly was not willing to try the sequels.

'11-22-63' by Stephen King... This is a stunning work of science(?) fiction (Only science fiction aspect is the time-travel plot device)- I STRONGLY recommend this book- the research that went into this book is unbelievable, and it is all put together by a master storyteller- without question one of the best books I have read in a VERY long time.