What I did.....
Get the trailer level unhitched...
Measure the height from the top of the socket to ground...
Select drop to match that measurement...
When hitched adjust wd to return trailer to level...
Visit CAT scales to check for proper weight distribution...
Level TV & trlr is the goal...
Others may differ...but that has worked fine with our Hensley.
Agree....research and shop around for the sway control.
Don't scrimp the Peace-of-Mind/safety factor is very important
IMHO.... our Hensely has been our best investment in that regard.
Bob