We have a new Husky 16K "S" slide bar type.
No problems with a Greystone 32RE hanging on it.
I wanted the W articulating type.
The place I bought the hitch from said "don't bother".
No real advantage other than easier un-hitching on not so level places.
The "experts" at the place I bought from guaranteed that I'd probably do bed rail damage eventually with the fully articulating hitch also.
I trust their recommendations.
Bought from Allied trailer supply in Sacramento for $325.00 (no rails).
Overall happy with Husky.