Which weight distribution setup do you recommend?

OK...here's another one not on your list. I've pulled various trailers for 50 years and by far the easiest most effective one I've found I now use and that's the Andersen. I've heard that they are not so good on really large trailers, but don't know that for a fact. I do know on my setup there is absolutely no blow by or suction from large semis passing me and it is very easy to hook up.