I have shot wood, fiberglass, aluminum and even some carbons. The carbons are good for targets with my ole pro vantage hunter, I can get a little more range out of it. I even tried to hunt with them last year and was very disappointed with the penetration. With the carbons, you need to be very careful about staying away from a shoulder bone. The aluminums have little trouble penetrating with a marginal hit, therefore getting to the goodies and a higher likelyhood of complete passthroughs. As far as rests go, you can shoot aluminums and carbons alike of off an ole flipper style rest. All in all, if you plan on shooting a bunch of animals, my recommendation would be to stay with the aluminum arrows. Also, if you hit something hard, I would definitely flex the carbons good and listen for cracks. The reason for the flexing, I have seen one break on the release and stick in a friend's hand, I was not shooting the day the other carbon broke the same way and stuck in someone else's hand. It is not a pretty sight to see this happen.