Personally I like the slow burn; I don't think there is anything wrong with it. When I think about the movies that were most effective on me as a viewer I think of the original Haunting and the Exorcist, Rosemary's Baby, the Sixth Sense, the Others. These movies are not over the top at all, they are movies that rely on good story telling, good acting, good premise, good exposition and I want to stay true to that in future projects.