Kinder Morgan has let investors down multiple times, but these two high-yield alternatives have been reliable through thick and thin.If you are looking for a high-yield investment in the energy sector, a great place to start is with midstream stocks. The midstream is filled with toll-taker companies that have reliable cash flows supporting their dividends. However, all midstream companies are not created equal, which is why you might want to avoid Kinder Morgan (KMI -1.40%) but will probably find Enterprise ...