Mike, I have the orignal ACS-CX and it has been torture tested by shooting very light arrow's at speed over 240 fps, the bow became my tournamnet bow and during that time period I shot it every day(except tournament's) 5-6 hrs, then when hunting season rolled around it became my hunting bow and continues to be the rare bow I'm attached to :D Bow's tend to be like claw hammers and simply tool's with me and I treat them as such, but this one has done it all...keep in mind the bow I'm speaking of was only a prototype and though in my eyes its hard to imagine, the design has continued to evolve.