The muni bond market is in a difficult place for investors. Demand is far outstripping supply, which means prices are high and yields low, leaving investors few opportunities to find value. However, few does not mean none, so here are some places to find good value municipal bonds. Airport muni bonds can be a good choice, as they tend to fair well in recessions and have very defensible funding sources (e.g. state and local governments). Toll-road bonds are another good choice, as they have very strong credit characteristics (only two have defaulted since 1970). Toll roads in San Francisco, New York, Oklahoma, and Maine are particularly good bets as there are few options for drivers to avoid them.
FINSUM: These seem like well-thought out and defensible choices.