Which of the MFA devices[1] is the best? The prices are low enough even for non-eligible. -- 1. https://aws.amazon.com/iam/features/mfa/ https://aws.amazon.c

Which of the MFA devices[1] is the best? The prices are low enough even for non-eligible. -- 1. https://aws.amazon.com/iam/features/mfa/ https://aws.amazon.com/iam/features/mfa/