Carbon arrow is more durable and less mass equals more speed. Cost is two the three times the cost of premium aluminum arrows. Excellent choice for 3-D application and extended yardaged situations. Aluminum arrows less expensive, greater mass, MORE PENETRATION and any damage is visible with no possibility of having a damaged arrow explode on release on in the game. You want the best for 3-D go with carbon, you want the best for hunting, aluminum hands down.