I used an EQ 4pt sway WD for 2.5 years and apr 10,000 miles. Worked fine. Noisy though. I also used a Hensley Arrow for a short period of time. Bought it used and sold it for what I paid for it. JMHO but you won't find a better WDH than either the HA or PP. If you can find a used one then buy it. I don't know if buying new is really worth it. My TT was not the most stable since the axles were positioned close to the center of the TT. So for me it made it worth it. If you don't have any sway issues but are wanting to hedge against ever having them then you can pretty much guarantee you will eliminate any possibility of having sway issues with the HA or PP.