Faster bows hit harder with the same weight arrow, and shoot flatter. Then you weigh that against the cons - like they are usually louder, harder to tune, less forgiving, and don't have as smooth of a draw cycle as a bow with a lower IBO rating. They may be worth it for 3-D shooting and for long range hunting out west, but not for the regular hunter who limits shots to 40 or 45 yards, IMO.