Unconquerable Sun
It's not high literature, but what a fun ride. Fortunately, the sequel came out recently so I am already ready to start the next one.
It turns out that I really like the light interpersonal drama of royals in a space empire who also get into pew pew pew fights.
I'd have never thought that this specific thing was my jam; but between this and Scalzi's Interdependency series, I guess I need to admit it to myself.