I have always assumed I would get an airbag system similar to this LoadLIfter 5000 Air Springs. My question is, would something like this be a better way to go, or would it be better to get a weight distributing hitch instead? I haul about 7 or 8 thousand lbs. pretty consistently on a 20' gooseneck trailer, however I am thinking about getting a 20' bumper pull trailer to lighten my load a bit. Although, I do not want to deal with the sagging rear end problems that go along with heavy bumper pull trailers! Anybody have any experience with these systems?