Ron,
I have the Chase system shocks only. I did not get the springs because my rig sits just about level with the camper and I did not want to have the front higher than the rear when loaded. Our rig weighs about 12,000 pounds so Kent suggested heavy-duty valving for the rears. We have a bit over 10,500 miles on the setup now and are totally pleased with the performance both on and off road. - no air time yet ;o)
These miles include most weather conditions from downpours to snow/ice. We were in Alaska this past Sept/Oct and traveled the Cassiar, Top-of-the-World and the Denali Highways. They do soak up the bumps and dips, but IMHO, the most impressive characteristic is the improvement in overall handling. Mind you, if you are expecting a velvety-smooth ride under all conditions you may be disappointed, but if you are looking for a suspension that significantly improves handling, you, as many others on this forum have stated, will be more than pleased.
Dave