Being that I work at Cabela's I welcome your trip. However, when it comes to the aluminum Summit climbing treestands I have personally seen numerous returns on the pre-X4 designs due to collapsing of the rear supports on the rear (tree connection portion) of the foot platform (we even pulled them off of our floor for the duration of the Christmas season 2003). The new curved design is not just for your feet but for improved stabilization and safety. The new non X4 have been improved as well.