Can't tell you much about the others, so I'll talk about the system that top's my KJ. I like my THULE very much. Had it on my last two trucks. I picked Thule's Playpen w/it's 18inch extention, to carry my gear. A total lenght of 62 inches long. It fits. Thule also has two other roof racks, the Xpedition (two sizes) and the M.O.A.B. w/extention. Last two ^$$$.
www.thuleracks.com. The Hi-Lift comes in several sizes, 42, 48, and 60inch long. Mine's a 48 inch. It handled a full size Blazer, it will handle the KJ with no problem. Primary use for the Hi-Lift is for pulling. I have the accessory kit, chains, and straps for the job (if needed). The jack is mounted to two 4x10 inch pieces of diamond plate. I bolt Hi-Lifts 4xRAC to the diamond plate and connect the diamond plate to the upper bar of the Thule and the original factory roof rack-bar support using 4 Ubolts per plate. Very sturdy mount. Before I mounted my Thule, I painted the rack to match my trim and the diamond plate adds a little flash. Commenting on another post from you vxla, I also mounted a 3 ft. Fire- Stick to my Thule on a SS tubular mirror mount, with a heavy duty spring and a 90 degree fold-down. Up on the highway, and folds down and protected inside the Thule for off-road and under the trees. When up it has outstanding 360 degree reception standing so tall. And when down its still connected in the fold down stage and still kicks out and recieves for shorter distances. I mounted it close to the driver side, so reaching up is not a big problem.Ialso needed to ground the rack to the Jeeps roof. Remember, your CB is only as good as the attention you pay in mounting the attenna. I have also bolted back to back, centered and near the rear of the Thule, two Jerry can holders. Good Luck!!
