I have the Yakima Big Powderhorns on my 2006. They have worked great for over 5 seasons. You can buy a lock so they don't disappear when you are away from your rig for a bit. They can be mounted with universal mounts or specific mounts to your factory crossbars. I have the 10V for my limited. Not sure if its the same for the sport depending on which rack you have. I agree, the boxes are nicer, but the regular ski racks are easier to store for the summer. Good luck!