I have a small (5,000 lb TT). I added the Monroe shock kit several years ago. It seemed to help some with road bumps. The wife said she seemed to feel the difference in the ride. I then added the spring upgrade. There is a noticeable difference in ride within my Tahoe. It is smoother and has less push/pull going over the expansion joints in roads. I also swapped out the OEM hitch on the Tahoe and bought a much beefier one. That change helped remove the flex between the trailer and Tahoe. I also have the Reese Dual Cam system for sway. All the changes have provided for a nice, stable ride. I'm not sure doing just one mod made a huge difference, but coupled together they sure did.
