I want to replace my old saggy stock springs and 4" blocks with some lifted springs. Anybody have any opinions on the best riding 4" lifted springs out there? Or would it be better to go with 2" springs and 2" zero rates? Or 2 1/2" springs and 1 1/2" zero rates? Or???? I have opted out of using the reverse shackle since I tow with this rig, so I am looking for the softest ride and the best articulation I can get, all things considered.