You can't do syntax highlighting in Evernote. If you do syntax highlighting with another tool, then copy into Evernote, you won't be able to edit it again. That's the main reason I couldn't use Evernote for programming notes.
Quiver's code cells use the ACE editor (http://ace.c9.io/), which is a real code editor with syntax highlighting support for over 110 languages, 20+ themes, auto indent and outdent, etc.
