In the 5000 lbs GVWR range there is a good possibility the use of a WDH is required by the truck manufacturer due to your receiver rating. But even if not, the use of a WDH will in general reduce the wear and tear on the suspension system of your truck, and increase the "comfort of the ride". The only reason not to use one is to save $350.00 at the expense of replacing the shocks sooner (the remote chance of breaking a spring) and a more seesaw ride. I would but you have to decide for yourself if it's worth it.