I was absolutely shocked not to find a flood of overwhelmingly positive reviews for Aquamacs. For anyone wanting to use emacs to write code on OS X, this is absolutely the emacs to use - it's a no-brainer. It _almost_ has the look-and-feel of a full-on Mac application - the only thing that differs is a little vestigial X-windows behavior (options (eg. fonts) are easier to set than with other emacs, but still don't fit in a standard "Preferences" window). There's a little bit of a learning curve, all because of "will this behave like emacs or like a Mac app?" issues, like whether preferences are stored in ~/.emacs or in ~/Library/Preferences. The last thing I want to have marring my beautiful OS X Aqua interface are applications that look like X-windows (or "hybrid"-looking applications). This thing is really pretty!