Git is the best if you are working on LaTeX by yourself, I wrote my dissertation last summer using it extensively. However writing LaTeX is different from code for many reasons, for one if you write a new class in e.g. c# all other classes do not care about the implementation, just what can the put in and what do they get out. With LaTeX that doesn't work, you duplicate yourself and get the narrative in the wrong order, they are very different paradigms. I am planning on writing a blog post on this soon.