I read only SILVER. 
 I am completely out of thrall with Mercy Thompson and her world and have no interest in the stories. However, I read Silver, for Samuel, because he is one of my favorite characters ever, and Bran too. 
 I liked Samuel's voice. I was a bit less used to the cadence of Ariana's storytelling, and I completely couldn't make nonsense of Haida's perspective for a good long while. 
 Perhaps, for these reasons, the story felt a bit disjointed to me, all over the place, with too many threads, and rushed. But when has it never been? 
 The story, for me, also seemed quite different form the backstory we'd been given on previous books, but whatevs. 
 I read for Samuel, and I loved the parts of the story he told.