Well, I just finished a 12 hour drive from Omaha to Memphis using the new hitch. It performed very well over some pretty challenging roads. The middle of the drive had some crazy winding hills and the beginning and end had some flat spots with wind.
The ride was smoother as far as up and down motion was concerned. The anti-sway was as adequate as my old equalizer and seemed smoother as well.
I can't say anything about durability yet, but I'm happy with the performance.
See my previous post for a description of my setup.