Suffice it to say, I think it tops my list of King books. I wonder if Christopher has read it, given the time-travel angle.
I'm not a King fan, and it's not like I go out of my way to seek out time-travel fiction all the time, just when I was in the process of developing and writing Watching the Clock
If you ever get around to reading it, we'd be interested in your take on how King handled time-travel. It's quite good.