I forgot to talk performance. I don't have any methods to measure speed. But here's one thought I had behind the design; more reflex in the tips, meant I can get the same draw weight with a thinner limb. Thinner limb = less mass. The first thing I noticed compared to my old design, was the physical wieght is less, and the draw more consistant, the speed was noticably better, but the thing that stood out the most was how, with the same arrows, the new design got about 3" more penetration in the hay bales that the old design of a few pounds more in draw weight. Not really up-to-date speed measuring like folks want, and a bit backwoods, but still results.