Thanks, guys.  It would be hubby's daily driver when he can't drive his Porsche and wouldn't tow more than a utility trailer on occasion.  His commute is decreasing as they are moving his office to another building, and if we can ever find a small enough house where we want to live over the border in NH it will drop to somewhere between 6-15 miles, probably mostly back roads.  Therein lies whey we are looking at a plow truck-moving to NH!  Mileage is about what I expected.  As I said, we love the F150 and are actually looking at an Expedition EL as well (yes, I know we can't plow with that!) but being able to plow a driveway with ease is very attractive.