I'm with RMCulloch, if it works as well as their 5th wheel hitch you'll love it. I've been running the EasyRider Air ride 5er hitch for around 6 months. I shag RV's from manufacturers to dealers, means most the time my loads are empty. It's less weight, but this can be more bouncy. I use a GN adapter post for GN's, these are usually empty also. Cept when I have a stack of gooses. The hitch virtually eliminates any input to the truck from the trailer. Really smooths out the ride, my loads ride better than I do. Still get input from the road through the axles, can't say as the air bag helpers I've got do much to prevent this. Think 4 link Kelderman's would cure this as much as it can be cured. I'm gonna get the EasyRider Air Ride receiver hitch soon's I can. They're great people to deal with and you can try before you buy. I've got scale tickets for 21,600. I hear DOT's started looking at transporter's axle weights, guess I need to start weighing every load to be certain I'm legal. Got grief enough without feeding the bears.
Cheers,
Steve J