I just bought one for the same reason (on a smaller scale). I have a friend who was towing a 26ft cobalt with an 'X'. He swears by the distributing hitch. Set it up properly!!! You can actually unload the rear wheels of your tow vehicle enough to spin the wheels excellerating or pulling up a ramp. Also an improperly set up dist hitch will interfere with your trailer brakes.
All in all a grat idea, done correctly.