With all of these note editing applications I wish I could bring my own editor. Vim has ruined me and it can be hard to adopt any of these applications without being able to use vim keybindings.
https://github.com/xolox/vim-notes mostly fits my needs, but if apps like these came with a pluggable editor interface than I imagine adoption would be a lot smoother for a certain subset of users.
if you like vim-notes, you should have a look at vimwiki: