I agree that speeds are somewhat close on all bows at this time however; if you look at chrono of the hoyt vector, carbon element, spider, and mathtews creed setup for true IBO speeds you will find the double cam bows are faster however; I do not think someone should by a bow solely on speed alone. Also, when we are talking faster it is only negligible and I think setup at 30" draw, 400 grain arrow, and 70lbs the Hoyt Vector actually outshot the Creed, Spyder, or Carbon Element. I think the difference was the Creed was 285-288fps whereas the Vector was at 309 and the Spyder was 301. Not enough to make a huge difference and they will all kill game as good as the other. I shot the Heli-m, and Creed and just did not seem to fit the bows and the Spyder just seemed to be balanced right, and shot well. This is only for me. I am not knocking the Mathews lineup at all and I think they make a great bow. I was set on a Creed or Carbon Element and the Spyder won out not because of its speed, but how it felt while holding at full draw, lack of hand shock on the shot, and smoothness throughout the draw cycle. I am not a brand specific person and think all of these bows have something to offer just for me the Spyder did the trick.