I started shooting carbon arrows probably around 10 years ago.Buddies of mine were doing it so I went along for the ride.I shot ACC's for a while but was discouraged by the cost and the fact that their side walls caved when struck by another arrow when practicing.In a nut shell that's the biggest benefit to an all carbon arrow,it's durability you can glance off them and not destroy the arrow.Yes you pick up some speed as well.