Is the first Charles Stross I’ve read (yes, I know, what took so long) and it’s good. Well thought out, mostly believable, and with good writing to backup the story. A little less cerebral than the best Culture novels, but that’s certainly a matter of taste. Stross wins huge points for the best ZeroWing reference in a work of serious fiction, but also loses some points for having an enemy who are essentially Nazis From Space.