I listened to all of them intently. I enjoyed all of them and wouldn't notice the quality disparity in any. I'll continue to live in blissful audio ignorance. I hope I never gain the competence necessary to be able to rank these in order.

It may not be as secure, but much easier to implement. Here is my system: An email for spam and sign ups for sites that still require it and that also block mailinator. I never check this email unless I need a verification code or something to sign up. An email for high security accounts, like banks and social networking. It is password protected with an extremely complex password, and I never share that email with any apps or outside vendors for auto-connect. Last is my personal email that I use for communication. This is the one that I share with apps for my smartphone. I never store any potentially devastating information on this email, so if it was compromised, they wouldn't gain any sensitive data.