Despite their clients’ interest in guaranteed income, many advisers still hesitate to recommend annuities. Much of that uncertainty appears to be tied to lack of understanding and experience with the insurance products, according to research from Morningstar Inc. The firm polled 106 advisers from a variety of backgrounds, including independent broker-dealers, registered investment advisory practices and wirehouses. Participants graded a trio of retirement income distribution methods: systematic withdrawals, insurance-based solutions or a “bucket” approach, in which some money is set aside for income and other assets are invested for growth, depending on the time horizon according to a report at www.investmentnews.com.