An alternative to using Emacs is EasyOrg [1] which makes org mode a dash simpler to use and with a useful agenda and calendar view. Not supporting full org mode, but plenty of power for Todo list and project planning.
While I greatly admire Emacs (which I've used) and Org mode (which always on my list of possibilities; it just doesn't suit current needs), lots of outliners can expand and collapse with a keystroke. That's not what makes Org special.
Call me kiddish then because I love opening up main.org and going thru all the TODOs and tabbing them open and closed periodically. What is the special sauce?