I have had many people say that my trooper is the smoothest offroader they have ever rode in. I love the Old Man Emu shocks.I believe Nitrogen compresses exponentially, so as more load is applied the shocks become stiffer.

I had Rancho 5000's on the 87 trooper I used to own. They were terribly stiff.

You should also think about adding a steering stabalizer.

Also check out the upper and lower control arm bushings. When those go out they can change the geometry of the front suspension.