I would agree with what some have said in the past, but today speed does NOT necessarily mean less accuracy. Let's look at the Speed Pro and compare it to the Ross Cardiac for the sake of argument. If you were to get perfectly spined arrows for both (which would most likely be different arrows because the Speed Pro would require a bit of a stiffer shaft), the Speed Pro would shoot an arrow 25 FPS faster without a decrease in brace height, without an increase in draw weight,and without a decrease in arrow weight. In fact the Speed Pro arrows may be slightly heavier. So, all things being equal there is nothing that would decrease the forgiveness of the bow. Now that speed has to come from somewhere, so the draw force curve would be much more aggressive. If you can handle the stiffer draw, even in cold weather, the Speed Pro offers a speed advantage.