There are a lot of oils on that Ford spec approved list! If I had invested in a new Powerstroke that I was going tomuse for heavy hauling I'd go with the Lubrication Engineers Monolec Super Syn Heavy Duty Engine Oil 5w40. Probably the best, and most expensive, oil on the list.
I'm a Powerstoke driver myself (1996 7.3l) and I can't help but ask what it was that made you switch to Ford after the Duramax gwve you such good service? I like that Ford is making their own Diesel engines right here in the USA.
I am now a Cummins guy, 2011 Ram 3500 4x4 Laramie, no issues, great rig. I used to own a 2002 F350 4x4 with the 7.3, made for Ford by International. Great truck,great motor, ran like a top and easy to work on. I know the engines in the New Ford Trucks are made by Ford and are much different in many ways compared to my old 7.3. I mostly used the MC 15w40 oil, 5 quart jugs from WM with no issues. The MC oil was made for Ford by Conoco Phillips, I am guessing that is still true. There are many good oils available, I would say as long as it is Ford Approved and the correct oil is being used for climate temps, OCI's and the correct oil filter is used, you should be good. In my 2011 Ram, I run the Shell Rotella T6 5W40, another great oil.