I have had noticeable improvement with a DEMCO Glide Ride. No need to match GVW as it works on a different principle. I have reduced my chucking considerably. With the Moreryde you can get some extra motion when the compressed rubber "unloads", and you need to match the weight of the trailer not the pin weight.
Bill & Meina
2006 GMC Sierra 2500 D/A
JT Strongarm Stabilizers
Demco Glide Ride
Blue Sky Energy Solar Boost 2000E MPPT Controller