I'm concerned about the amount of sway we have with our trailer. I feel that it gets too unstable when semi's and even SUVs pass us. Admittedly, my past towing experiences were with an F250 diesel tow...
I had a 6,000# trailer behind a 1/2 ton truck and a Reese SC hitch. The SC has built in sway control as the spring bars ride on friction material. The trailer never swayed once in 5 years. About $500.