Having just traded in a 2013 F150 5.0 with a bad engine for a new 2018 Ram 2500 with a Cummins, I can tell you that there is a world of difference. The remaining 2018's have 11K plus off sticker if that helps.
Now my 2 cents, have a high wall pop-up, close to 4K lbs. By the time we were packed and loaded up for a trip with 4 people and a loaded truck bed, it would do fairly well on flat ground, but once we started getting into the mountains, then I could tell a difference, sometimes more than others. There were a few mountain passes in Colorado where it would take dropping into 3rd and 4K+ RPM's to make it. As a daily driver, it was a good truck. 16ish in DFW traffic and 19-20 on the highway. I know the progressive years brought more HP & torque to the 5.0's and hopefully some better design/problem corrections.
If I wouldn't have lost all faith in Ford's engine design and looking to trade, I'd more than likely go with the 3.5 EB. I know there was a lot of problems in the early years 2011-2014 with water intake from the CAC and intercooler, but haven't heard anyone comment on that problem in years so I guess they got the problem fixed.