Jeep Suspensions Lift Kits

I know there are a number of Jeep Suspension Lift kits in the market. My Jeep shocks are messing up my riding these days. I want to take a road trip to the countryside but now its difficult to manage with the jeep. How long does it take before replacing the Jeep Shocks. Can I replace them and where can I find the best replacements.

If you are going to replace with stock shocks, any good quality shock should work. On our Wrangler, I replaced the worn shocks (and steering stabilizer) at around 100k.

For aftermarket shocks, I've heard that the Rancho 9000s are very very good.