I really liked The Dome as well. My SO thought the end was a letdown but I didn't. I read the story as allegory of aspects of life today - e.g. global warming, life under a totalitarian regime.
I liked 11/22/63 as well but I think I may like The Dome more. 11/22/63, as with many of King's latest works, deals with themes of love.
To me, in these works, King isn't so much a genre writer as he is a literary writer using horror or science fiction elements as a tool to explore the human condition. As such, I think he is a very good writer, one I enjoy very much.