I finally was able to binge S3 and S4 on STARZ online, which I had canceled. Oh, my. I think they did a fabulous job bringing these two dense books (VOY and DOA) to the screen. I love the evolution of Jamie -- he is not always right, but he owns his mistakes. In the books, I often had to settle myself in some of his more idiotic moments (sometimes his decision making at 45 years old was WORSE than it had been at 23), but in the show, the writers appear to have smoothed out a lot of those moments. I kind of dreaded both the not telling Claire straightaway about Laoghaire bit and the selling Roger to the Indians bit because they smacked of plot device and not plot. But both instances, the series left me with the feeling that although these were both bad decisions in the moment, I could see the why of it. Much better.
Overall, I liked the changes they made to the books. I am as on board for the story as I ever was, and I'm looking forward to S5.
I won't, however, follow the episodes on this board. It very nearly ruined the watching experience for me.