Never reported on this thread my desicion: I went with the Hellwigs and the difference was instant. Back end came up about .5 to 1 inch unloaded and with the wheeler in the back or a load of wood it has 0 sag (wood could weight 1,000lbs ). I have them pretty tight and will probably adjust them in the spring when things thaw out and try playing with different settings, right now the nuts are way up the u bolts. Towing is nice and right on, with the rear end bounceyness (if that is a word) is all but gone loaded. I like to put my 600lb wheeler in the back while towing my 4500 boat and before it would be maxed out on the springs appearing flat. Where now its right on with better braking control and steering feel as the weight is kept on the front wheels, instead of the back end making the front end stand straight up and people flash me at night thinking I have my brights on. Unloaded the ride is still softer than the offroad titans and with over a 1/2 tank of gas unnoticable. Next on the list tires and possible lift.