If you're on the hunt for high yields, then you'll want to dig into the midstream sector, and these two industry giants are the ones to pick. That's a statement that nobody would expect to hear given the inherent volatility of oil and natural gas prices. The key is that you need to focus your attention on the midstream sector, which operates very differently from energy producers and processors. Here's why Enterprise Products Partners (EPD 0.72%) and Enbridge (ENB 0.84%) are the ultimate place to invest $1, ...