FYI: (I'm not sure of "Must Have", but all three are excellent funds)
My top income themes for 2016 are centered around large, diversified and proven investment vehicles that circumvent the hit-or-miss proposition of individual sectors. That may seem boring to those who like to tempt fate with the glory of a turnaround story or make assumptions in continued strength of momentum names.
Nevertheless, I think you will find these actively managed mutual funds and low-cost exchanged-traded funds offer attractive characteristics as core holdings for nearly every style of income investor.
Regards,
Ted
http://investorplace.com/2015/12/income-mutual-funds-etfs/print