The DD long arm kit will relocate your rear control arms in a way that will restore their geometry back to stock or at least, a lot closer to it. This is why they provide a "better" ride. The high clearance brackets mount considerably "higher" up on the frame rails and that makes them sit at an angle that is NOT similar to stock and will therefore cause your ride to be a bit off in the back. We ran the high clearance brackets with bolt on coil overs and didn't think much too much of it in terms of it being good or bad. Granted, ride quality is 100% subjective.