Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best Chapter Yet

The fourth, and what I felt best chapter thus far of the Dark Tower Series mostly leaves Eddie, Susannah, Jake, and Bumbler Oy behind as we get a peek into the past of Roland and the great love of his life. King mostly departs from his usual blend of modern day horror and gore and instead weaves a wonderfully heartfelt and captivating Western infused love story. Here we're introduced to a much younger and untainted Roland, as well as pals Cuthbert and Alain. But it's the fair haired beauty Susan and her complicated and tragic destiny that intertwines with the Gunslinger and drives the bulk of the book. A final chapter returns us to our regular band of merry travellers with a conclusion drawn from "the Wizard of Oz' which was a little disconnecting in relation to everything that had preceded it. Still, the book overall is a great ride that's not the usual King fare, and doesn't fall into the trap of waiting for something to happen while galloping towards the end of the series.