I finished the second Poirot novel, The Murder on the Links, last night. I enjoyed it a lot. It feels so effortless.
I'm moving on to Hunting Party by Elizabeth Moon, the first Serrano book, for one of my sub-challenges. One of the few Baen ebooks I've actually paid for, and even then it was a massive $4 for the whole trilogy. I'm not sure how much it costs at post-amazon Baen.