I've had one since last fall. My only WDH hitch to date so no experience with others. My trailer is just under 4,000 loaded and is 550 lbs tongue weight, pulled with a Nissan Frontier. If a had a full size truck doubt I would need WDH.
For my small rig the hitch works great to provide a very stable towing experience. The Fastway is a 2 point sway control where the Equal-i-zer is 4 point sway control.