Pin box or airbags?

My brother has a Raptur, triple axle, toy hauler pulled with a 3500 CTD quad cab 4x4 longbed and I once rode with him. He has a straight hitch with stock pin and let me tell you that truck would beat anybody to death. The trailer pounded that truck back and forth violently compared to mine. I could never stand more than a couple of hundred miles on smooth road at the most. My truck rides like a Caddy compared to his but then again I have not quite 2/3 his total weight too. He drove mine and wanted to trade his whole rig in on a setup like mine. I will tell you any air pin and bags will make all the difference as I also drove my dads 3500 CTD quad cab long bed 2 wheel drive hauling my camper home before the air pin install and you could feel the back and forth clunking. That is with his B&W hitch and a brand new 5er too. I am a believer in them now and will never be without one again.