Definitely try Emacs. Preview LaTeX is nice, Rope is also here. Also I find it easier to set the system to do all text editing in Emacs than in Vim. I mean that

Definitely try Emacs. Preview LaTeX is nice, Rope is also here. Also I find it easier to set the system to do all text editing in Emacs than in Vim. I mean that one can use Emacs to write mails, chats, edit all types of code, write and post blog posts, web pages and so on.