[OT]—There is no general answer because it depends on your risk tolerance, your desire for tax-free income, and your state income-tax rate—as well as your outlook for interest rates.
When buying VMATX, I satisfied my concern about rising interest rates by observing that the fund's worst year ever for total return was -2.5%.
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”
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