Hells Revenge of course. Do it every year and have done all the obstacles including Hells Gate, Escalator, Hot Tubs, and Tip Over Challenge. Also did Cliffhanger, Poison Spider, Moab Rim, Brittany Spears at Strike ravine, Steel Bender, and Metal Masher and the 570 shined! Only a broken front CV on Brittany Spears spoiled my carnage free record!. But SuperAtv and ZBros fixed me up to finish the week.I bet the 570 made it an awesome challenge out there on the trails. That would be a blast. make sure you come by our booth. what trail do you like the best ?