Who’s the “best of the best” when it comes to the midstream sector–for the entire country? It probably won’t surprise you to learn that the #1 midstream company in the Marcellus, by size of operations in the Marcellus, claimed the top spot in EnergyPoint Research’s 2014 Oil & Gas Midstream Services Customer Satisfaction Survey. That company is, of course, MarkWest Energy. What may surprise you is that Sunoco Logistics, currently under an intense smear campaign by anti-drillers who want to prevent the Mariner East natural gas liquids pipeline from beginning operation, came in at #2. Two other companies with major operations in the northeast are also in the top 5…