A lot of info about all the weight distribution and sway control systems. Some are very expensive. I will review the trunnion, round bar and chain based systems. I have between about 15,000 and 25,00 miles with Curt Chain system and the Fastway E2 trunnion and round bar systems. I will also gloss over the Hensley ProPride, Blue Ox, and Andersen systems. No such thing as a bad system, just my observations and preference.