In addition to what the others have said, I would point out that TOTP with the Yubikey/Yubico Authenticator has one other advantage. You can move between differ

In addition to what the others have said, I would point out that TOTP with the Yubikey/Yubico Authenticator has one other advantage. You can move between different android devices without problem. Its even nicer then Cloud-based Authy. I was in a pinch once and had to do TOTP, so I grabbed the phone of my friend, downloaded the app and used it to log in.