Weight Distribution Hitch or Air Lift System?? Help

I tow the below trailer with my 5.7 CrewMax SRD. I use a good WDH to stabilize the trailer when towing. I use the TRD sway bar to prevent sway in my truck. I use Bilstein shocks and Firestone Air Bags to level the truck and trailer together. One does not replace the other, rather they complement each other when used appropriately. Outfit your truck as needed and understand what each device is supposed to do.