Key PointsBrookfield Infrastructure's contractually secured cash flows put its dividend on rock-solid ground.NextEra Energy's rate-regulated revenues help support its steadily rising dividend.Vici Properties' long-term leases make its high-yielding dividend a low-risk gamble. 10 stocks we like better than NextEra Energy › Investing involves risk. However, some investments are much lower risk than others. Companies that generate contractually gua…