I started Stormlight and got about halfway through the first book, mostly enjoyed it, but didn't love it and, for reasons I can't remember, never went back to it. That's been the case with several of his books; the only one I finished was
Elantris, way back when it came out. My impression of Sanderson--both from reading Elantris and parts of several other books--is that he is an excellent world-builder, but his characters and dialogue are more workmanlike; solid, but nothing special. Where he shines--in addition to his worldbuilding--is a rather astonishing work ethic, that has seen him churn out an
uncanny number of books in a relatively short period of time.