Corp or Muni Bonds

Just like anything else, it depends on who is issuing the bond. City of Detroit bonds and Puerto Rico bonds have ridiculously high yields, but there's a bit of a catch ...

In general, munis will pay less due to the tax exemption. If you're a baller in the top tax bracket then by all means, but if not I'd stick with corporate. But even in that sector you have yields all over the map depending on how lucky you feel.