I'm a hardcore Vim user.
Just recently I've switched over to about 90% Sublime Text.
It's not as configurable as, say, Emacs -ie., you can't do Vim keybindings in it, but you can customize most things very easily.
Documentation currently sucks for Sublime Text 2, but it's not too hard to poke around and try stuff out on your own.
I've almost completely remapped Sublime Text 2 to use the subset of Emacs keybindings that I actually learned and committed to muscle memory.
The only real problem is that Sublime Text isn't free. I haven't registered yet, but I do intend to once an official release draws out and the documentation is fleshed out.
Also keep in mind that Sublime Text 2 works on OSX, Linux and Windows.
Documentation currently sucks for Sublime Text 2, but it's not too hard to poke around and try stuff out on your own.
I've almost completely remapped Sublime Text 2 to use the subset of Emacs keybindings that I actually learned and committed to muscle memory.
The only real problem is that Sublime Text isn't free. I haven't registered yet, but I do intend to once an official release draws out and the documentation is fleshed out.
Also keep in mind that Sublime Text 2 works on OSX, Linux and Windows.