for what its worth
i bought a 2017 f250 6.2 gasser 4x2 last october to tow our cat scaled 7500lb TT
i towed it before that with my 2000 f150
i can tow it with the f250 coast to coast with no wdh but i wouldn't.
the wdh takes bounce out of suspension and makes for a way better setup. tows very well and balanced great with truck. almost like one unit.
i use a friction sway bar. helps out on the open highway.
if you are planning on a fiver down the road, skip the 3/4 ton and go 1 ton dually diesel either ford, dodge or chevy. they are all fairly reliable now. diesels may require more maintenance etc but they are worth it if you go over 10,000lbs towing