I also run with an Airsafe Class V with the Reese Dual Cam setup. I've found 35psi in the unloaded airbag to be right for my setup. It dramatically reduced the jolting bounce on concrete highways. I can barely feel the trailer axles when they cross a big joint or RR tracks.
It moved the ball mount about 6" aft compared to the standard draw bar and as others have reported, did not add any sway. The added clearance from the bumper also allows for a slightly tighter turn when maneuvering without risk of contact.
My only concern was if I would have to lengthen the chains or umbilical and in my case, I did not have to. Another + was that when unhitched, the ball mount raises about 2" reducing the chance for dragging it on some driveway aprons.
I wore out an older model after 15 years of use. It used big roller bearings running in a vertical track. The tension of the spring bars really stressed this design. The current design of the Airsafe eliminated that problem.
Yes, it isn't cheap, but it may pay for itself over time in by reducing the wear and tear on the Airstream alone.
Air Safe Hitch, Reese Dual Cam 800#, Centramatics