I watched this forum for quite awhile before making my decision to buy the truck in my signature. I read a lot of posts from many different folks who where happy with their rigs. One fellow who was not happy was in Texas and dealt with a lot of wind. He had no complaints about the engine, but he went back to a larger truck for greater weight / stability.
I have had it about 18 months and 14k miles. No issues of any kind and it rains in Oregon on occasion :).
Good luck,
Stu
p.s. I am not aware of any F150 Ecoboost owners with 10 years and 150,000 miles yet, however I hope to continue to read about happy owners for many more years. This goes for all makes and models.