unicon stalking

For months we've been researching and debating a tow vehicle.  At times the options seemed endless.  Trucks are better for towing but a family of 6 doesn't fit in a truck very well.  Do SVUs really have enough towing capacity for the size trailer we want and all the stuff we'll end up bringing along?  What about vans?   With some sense of which travel trailer we wanted we felt like we had a good idea of our towing needs.  Which ultimately lead to what we began referring to as unicorn hunting. We decided we wanted a Ford e350 diesel 7.3l liter standard length passenger van.  Unfortunately coming by one is not easy and coming by one that has low enough miles and is in good shape is even harder.  Lots of online searching.