We have the Trailer Saver air hitch. It was the first generation so it was not designed in two pieces for easy removal. We have been using it for 15 years with a 14,000 Lb fifth-wheel. It works very well as I have never had a non-air type hitch for comparison. My understanding is if the pump fails it can still be used as a conventional non-air hitch.
Going down the road going over bumps I look back at the trailer and it is slowly pulsing up and down on the air cushions as if it is being rocked to sleep.
Good luck with your decision.