This topic comes up a lot, usually someone with a large family looking to buy an SUV that will tow an equally large trailer.
The Ford 350 van is usually the first recommendation out of the gate. Try searching for those words to find the other threads.
Renting really adds another level of complexity. Before trading my sports car in on my awful truck, I tried to rent something to pull my tiny camper to Alaska and back. Every shop I checked with from National to Mom 'n Pop were strict about no towing of any kind.
Expanding my search, I found an industrial equipment rental chain (National) that rented 3500 series trucks and allowed towing... but they were only serving like Texas and the Dakotas and a few other states (oil fields?) They were crazy expensive, both in daily rate and mileage. I guess when their customers are big-oil, and they want a truck now for some reason, price isn't a concern.