I shoot 2016s and 3555s both, and cedar too. What I find is that carbons need extra weight added (I've been using the grey tubes 3 Rivers sells) to get adequate penetration on game out of my setup. I am shooting a 46# BW longbow, and a Thunderstick Mag same weight. For stump shooting, which is my main type of practice, I prefer aluminum. If you bend them they can be straightened, most of the time. Carbons tend to split if you hit something too hard with a blunt, and you have to throw them away. Cedars just break and unless you can foot them, they go in the fireplace. All in all, aluminum shafts "take a lickin' and keep on tickin'". Wish Easton still made the XX78 Super Slams shafts in 2016=--they were the toughest ever!