I’ve used Aquamacs for the past four years or so. It has its strong points.
But I’ve always been a little unhappy with its slow performance relative to native Emacs (I use a MacBook Pro), and its unique initialization and behaviors. I’m sure there are good reasons for every difference. But each difference is a little more cognitive load. E.g., I never got used to M-x Info opening up in a new window somewhere on my screen…
Today, I decided to try Emacs for Mac OS X. Whoa! I love it! It’s Emacs, the whole Emacs, and nothing but the Emacs. Win!
I even donated $50 to the project. So there!
Seek Nuance 
You should also try https://github.com/railwaycat/emacs-mac-port
I personally think it’s way better than the port from http://emacsformacosx.com/
Thanks! In what ways do you like it more?
yes, please expound upon the difference!
For once, the spell checking works much better.
I like it mostly for the Smooth Scrolling but there are more features, see the readme file.