* : Denotes a date based on leaks and, while likely, is subject to change.
I dropped off after Ghosts Of Onyx. I found the original books to be nice, breezy lightweight military scifi that was entertaining and easy to read when I wasn't in a mood for deep themes.
How do any of the newer books fare?
Most continue being lightweight military sci-fi books, the original three by Nylund are probably the most hard-military the books get. The major exception being the Forerunner trilogy by Greg Bear, they are fantastic books, but a lot of people call them Halo’s Dune because they are true hard sci fi books.
For the most part, the books are in trilogies, and are typically self-contained, some of the newer books, especially Kelly’s, have started pulling threads from multiple series together.
If you’re looking to pick up where you left off, Contact Harvest and Cole Protocol are the next ones in release order.
Thanks and you just reminded me that Contact Harvest exists.
The Forerunner trilogy is the least light weight. The rest of the books should be as easy to read as the rest. Gay's books are the closest in vibes to Ghosts of Onyx.
"Halo 2's 20th Birthday"... 
God I feel like old Matt Damon at the end of Saving Private Ryan reading that.
Every Halo book by Kelly becomes my new favorite Halo book. She does such a great job at pulling up old or obscure lore and building amazing stories with them. I’m super glad that 343 is continuing to work with her.
She's my second favorite, but rapidly getting close to finally unseating nylund. She truly understands the lore