I quite liked the DVC, but thought Angels and Demons was a pathetic, pedestrian, and basically stupid novel. The most glaring fault is that Langdon is constantly suprised, blown away, and struck dumb by the events of the book. It seems like every page he has a breakdown
…more where his legs "turn to jelly" or he feels shock "in the pit of his stomach". If he really was a world-class scholar, he would have realised in the first stages of the story that he was going beyond his realm of experience. He is portrayed as reacting like a dim-witted fool.
Besides which, who else thinks that Brown desperately wishes he was Langdon? (less)