+1 For evil-mode. I'm still using MacVim and Emacs+Evil side by side because many things that my vim does (via plugins etc) my emacs/evil doesn't do yet and I lack the time to research it all. But having elisp for extension is such a joy to use. I've dabbled a bit with evil, too, and I really like how easy it is to extend it.
Funny, I just started using evil too. You might want to checkout prelude/projectile if you haven't yet. Also, less obviously for a vimmer, keychord.el. I'm able to use 'jk' for ESC, for instance. For others interested, the brief evil manual is worth peeking at: https://gitorious.org/evil/evil/blobs/raw/doc/doc/evil.pdf. Motions, text objects, and operators in theory are easy to add in elisp, which is cool. For this reason, evil seems unlike other vim 'emulators' that I'm aware of (could just be ignorance, obviously). I'm really digging evil though.
Yes, I feel similar. I've tried way too many vim 'emulators', and the only other one which comes close to that 'vim' feeling is XVim for XCode. However, neither that one, nor all the others feel as easily extendable (with the exception of Vico, a native Mac vim clone that uses Nu (a cocoa lisp) for extension, but Vico even though it's easily extendable lacks a ton of vim commands)
