We have a Hensley TS3 air bag hitch. We get no noticeable chucking, bucking,or jerking with this set up. As others have mentioned, one forgets the 5er is behind you. More often than not, the only way you know the 5er is back there, is by looking in the mirrors. These hitches are very expensive, but worth the price if you value a solid and complete hook-up and a comfortable towing experience.
I am NOT affiliated in any way what so ever (other than being a retail customer) with the Trailersaver company.
Best of luck with your choice of hitch.
Lakeside