When choosing a lift you want to get something that rides as well on road as off road and usually to get that benefit you should purchase coils and shocks that work well together, so keep that in mind. Also, if you are really concerned with a suspension upgrade or kit that can handle weight seriously consider OME that is why most people recommend it. When you start adding equipment, bumpers and protection you begin to approach that GVWR and that is determined by brakes, suspension, frame, engine. If you can cheat a little by installing a suspension that can handle the additional weight that may be your best way to go. I currently have an HD OME kit on my Commander and opted for OME because the springs are rated to handle 90-200 additional pounds. If I had stayed with spacers and stock coils my Jeep would have sagged, bottomed out and swayed as I drove around turns and off road obstacles. Also, think about the max tire size you are going to actually stick with because usually that is the number one reason why a suspension lift is needed. If you are thinking about getting a taller suspension to counter the sagging that may not be a good idea. You may gain the clearance but with the coil being loaded constantly it may fatigue and fail quicker than a spring designed with a heavy or higher load spring rate. I had to experiment with two different spring weights up front before I settled on HD coils up front. I found it to be comfortable yet floaty when cruising at highway speeds now it is firm and compliant and still comfortable.
