Ask HN: What do you use to take notes?

I use Notational Velocity for my notes and I love the ease of use but I'd like something that will allow me to share a note with a client and also has code highlighting. And image uploads. I want to be able to upload screenshots. I looked around but can't find anything that's a mix of Evernote, Wunderlist and GitHub Gists. What do you HN people recommend?