Towing was the only reason I bought a real SUV. First I needed something to tow a popup camper (5000 pound capacity Explorer) and later a full size camper (9000 pound capacity 5.4 Expedition). Not sure I'd want to part with the Expedition now even if I wasn't towing a camper. Just too handy. Responded last weekend to a "Daddy" request to bring a new door to my daughter's house from Home Depot. Needless to say it wouldn't fit in either their Outback or Forester.
Pretty sure pulling my 23' hybrid camper (full size body with the aerodynamics of a brick) I got maybe 11 or 12 mpg behind my '17. Only pulled it once so far and that was 500 miles last month from Cleveland to Richmond and that mainly in cruise control on the Interstates. Saw no difference activating Tow/Haul. My '07 pulling the same trailer got less than 10 mpg. The largest UHaul two months ago with the '17 got better mileage and maybe pushed 15 - 16 mph. This size trailer hides aerodynamically behind the truck.
The built-in brake controller was a pleasant surprise. I'd been using the Tekonsha Prodigy (proportional) controller on my previous Expedition and Explorer. This is every bit as nice and the setup is the same (meaning simple!).
The tow connection is smart as well. When I first hooked the camper to the truck the instrument panel indicated the left trailer brake light was out. Really? The truck knew that? Sure enough a bad bulb. PITA to replace a 14 year old light bulb that's rust-welded itself into the socket. Not sure how or even if this works on the boat/Uhaul trailer connector but it does on the RV connector. Gotta look at LEDs for the trailer.
-- Chuck