Goldman Sachs analysts Jerren Holder and Michael Lapides have a positive view of the Midstream energy stocks moving toward positive free cash flows, with Conviction Buy-rated Kinder Morgan (KMI) as their top pick. In a broader research note, the analysts also upgraded Plains All American (PAA) and Cheniere Energy (LNG) to Buy from Neutral and Semgroup (SEMG) and Sunoco (SUN) to Neutral from Sell. The analysts note that the "simplification thesis" in the sector continues to play out, volumes are growing, and "many new takeaway pipelines are coming online", even though the midstream stocks' performance has been lagging. Holder and Lapides believe that an inflection is ahead with more major projects coming online after a period of high capital spending.