Went straight to Amazon and ordered book 3. Don't want to wait until February to find out what happens next, which is clearly the sign of good writing.
This is how I felt about book 1. Which I enjoyed more when I re-read it earlier this evening. It's definitely a book that works for multiple readings - I suspect I'll read the first two again when book 3 arrives.
Original post on Dreamwidth - there are comments there.