I have an 2003 Explorer with the V8 so might be a little different than one you are looking at. It does have a frame and it tows pretty good. I tow about 4000lbs of utility trailer, and not very often so I don't have the WDH. I think though that you would prefer the WDH but keep in mind that any of the SUV's you mention have a short enough wheel base that you don't want to overload it or you could have handling issues if you have to brake it hard. I've partially jackknifed hitting the brakes quickly in a turn. Gave me a new respect for what that weight can do.
