If you are looking at rough country I would suggest the 3.75" vs the. 3.25". The shocks are a bit harsh, so just buy opt out on the shocks and buy some skyjacker, or bds hydro's. If you have a heavier rig, or plan to add a winch, and or armor then avoid rough country. Their spring rates are very low and don't support additional weight very well.
I would also look at zone offroad. The 4.25" kit is a very nice entry level kit.