Is there a reason you don't use the Homebrew version of Cocoa Emacs?
I did not know about Homebrew's Cocoa Emacs. Thanks for the tip. I'm installing it now and will see if I get 24.4 with eww or some previous version (minus the eww). Thanks again!
If you ran the install with --devel you should get 24.4-rc1
My feeling is that it's much better than aquamacs. Aquamacs does some things enough differently to regular emacs that I just fine working with homebrew emacs (or emacsforosx) less effort when installing new packages.
I have installed Emacs-2014-10-21_01-40-00-118172-universal.dmg and it has support for libxml2 and eww. I'm very happy.