Thanks for your input everyone. I have decided to go with the Evernote format. It ties in nicely with another project I'm starting. My Mum always kept a notebook which she called her record of "all thinks important and unimportant" which was a list of dates that things happened on. It was always a useful reference and now I'm starting my own.
These facts/quotables will go in their own notes for the day they happened. In this case, I've created a note for the conference.