* Cross-platform with a pleasing (to me) GUI. Specifically, I appreciate the ability to have multiple views including rendered previews of particular files.

* "Feels right". The ergonomics of the keyboard interaction Just Work for me.

* Excellent git integration (with plugins) which is frankly abnormal on editors that run on Windows as well as ix (or Windows at all - the git story on Windows is still pretty crappy).

Good plugin management and libraries of plugins.

Visual Studio has Git support built in...

> Cross-platform

Man, what a surprisingly useful comment. You have really changed how I feel about this subject 100%.

My most appreciated feature is having a user interface for plugin settings.

My favorite is noticing something weird, opening the inspector, and figuring out the issue quick. Console expressions, breakpoints, etc... it's a powerful environment. (Of my other 2 editors, Vim is fairly difficult to figure out and Sublime is a black box)

Being able to style whatever you want with css is handy too, though sometimes it's tough to figure out the right css selector to use.