I tend to like mostly fiction, but this being a presidential election year, I feel like reading a good presidential biography. I've heard that the John Adams bio by David McCullough is well-written, although perhaps too sentimental in its appraisal of the man. I'm also interested in learning more about FDR, but there seems to be such a mass of books about him that it's hard to know where to begin. Likewise with LBJ. I'd love to get some recommendations for my reading list from the eminently well-informed membership here. I'm open to reading about modern-era Republican presidents as well, but only if the biography is superbly written.