Over the years I have used various applications for taking notes, tracking research, etc. I have used basic word processing apps, OneNote, Google Docs, and Evernote. All have advantages and disadvantages. Since I'm starting a PhD in the Fall, I'm trying to nail down which app to invest my energy and effort into using for tracking all of the reading and research I'll be doing.
I am leaning toward Evernote because of the ability to create notebooks with numerous notes in each notebook and the ability to access my information from my computer, my phone, and the web.
However, I am very open to other suggestions, particularly programs I may have missed along the way.
P.S. I am using a Mac so the programs need to be Mac compatible.
UPDATE: P.P.S. I should also mention that the ability to handle no-English text would be a major plus.