first,,, what do you want to do with your jeep.mud, trail, speed, rocks...there is no "best" long arm kit.it depends on what YOU want your jeep to do.4 links tend to be better at speed,3 links tend to flex best,Y, or radius arms tend to flex well and are simpler and stronger but can be wierd at speed in whoops. find folks that have different types, and ask them what they think. just about everybody on this site recommends what THEY are running,,,but they dont even ask you what you are gonna do with it. hmmm. use your head,,, this stuff is spendy, you dont want to be disappointed or spend foolishly.