David, you'll get many replies here on this one. I have the TrailerSaver Hitch by Hensley. Love it. Can't give you any information about others. Mine does everything I wanted it to. Go to
www.trailersaver.com to get information about it.
Prior to getting it, I was being beat up from all the bucking and jolting from the truck and 5er combo. It took me 2 years to make up my mind because I was full time and I wanted something that was going to do me what I wanted it to do. Now I can arrive at my destinations without being really tired. There are many others who have the same hitch who will attest to what I'm trying to say.
Whatever you do, study them all. Mine was pricey -- $1800 and is now over $2000.
Orv