not quite the same, but Iain M. Banks is in my top 5, along with Vernor Vinge.
I can't really judge Asimov - so many people stole from him that he just reads like War & Peace to me in the sense that it was probably awesome and novel at some point, but at this point it's just a little stale, even though Foundation was still cool...at least the first few books.
With that said, I don't put VV above Stephenson. Maybe above Gibson because I really appreciate the technical details, but not quite sure. To me VV, Stephenson, and Gibson are all the absolute top tier, at least in the sci fi realm. No one even comes close, as cool as some one offs by other authors, like Forever War, are.
It's like he had the idea for the dystopia, with the main character fighting against the machines. And then tried to write a story around it. The central idea is interesting I guess, but the story built around it is not.
It doesn't help that the fight is futile, the machines as described are so powerful humanity doesn't stand a chance, so what kind of story can you make?
Maybe the later books are better.
Unfortunately every single one of his books has this problem. It's like all of his novels are written from the perspective of the protagonist's housecat.