There are a great many grammar books available that claim to make you a better writer. While some of these are undoubtedly better than others, it's hard to make a definitive statement about which is the best or how many are "brighter." If you're looking for a grammar book to improve your writing, you might want to start by checking out some of the most popular options and seeing which ones resonate with you. A few widely- respected grammar books that come to mind are "The Elements of Style" by Strunk and White, "The Chicago Manual of Style," and "The MLA Handbook." There are, of course, many other excellent choices out there; it really depends on your needs and preferences as a writer.