As I say in the video, Obsession Archery blew the doors off the 2014 ATA show with the Evolution. Folks just couldn't wrap their heads around a true speed bow that offered so much valley and so little vibration and noise. For 2015, the company decided not to mess (too much) with a good thing. The Fusion 6 pretty much is the Evolution. The only significant difference is that this year's flagship has a draw-length-specific cam, which is slightly more efficient and therefore delivers a few more feet per second. The specs are: 32-1/4-inch ATA, 6-inch brace height, 4.1 pounds, and 356 IBO (compared to 350 for this year's Evolution).