I have been using the ActiveState Komodo IDE for years now.
I use it not only for CI but also for WordPress, PERL and Zend development.
It has a great debugger, shows syntax for HTMl, PHP, JS, PERL and many more even if mixed in the same document and autocomplete function.
It has macros, code snippets and a plethora of other function. It integrates with SVN and I think with Git as well. But I dont use git so cannot be sure on that.
On the package it said needs Windows 7 or better. So I installed Linux.
