Cleaver,
JimmyT, GATeach and several other of our 'spirited' riders have installed the Progressive Monotubes and all of them will tell you that is a major upgrade from the stock system.
If you go to YouTube, search for "Traxxion Dynamics Gold Wing suspension" you'll see a series of videos by Max McAllister. One of them at about the 11 minute mark shows a cutaway for the stock suspension and why it is worth upgrading.
Information is power!
Cheers,
Steve