I strongly recommend you turn on 2-Factor Authentication wherever you can. As mentioned in this video, I use Google Authenticator on my Android phone for every service that offers it. I definitely prioritize one service over another based on whether any of them provides for 2-factor authentication of one type or another.
Below are the screenshots of what I did on my phone with Google Authenticator during the video above. Yes, I masked out account details not pertinent to the demo for my own security <grin>.