An all-mailbag edition of Where the Money Is with Motley Fool analysts Matt Koppenheffer and David Hanson answering questions on bonds, Bitcoin, ETFs, and being on a deserted island with four big banks.

Are big banks too risky for investors?
Many investors are terrified about investing in big banking stocks after the crash, but the sector has one notable stand-out. In a sea of mismanaged and dangerous peers, it rises above as "The Only Big Bank Built to Last." You can uncover the top pick that Warren Buffett loves in The Motley Fool's new report. It's free, so click here to access it now.