I've shot aluminums for years. Then last year I went to carbons and did not like them. I cant's say that aluminums are not not durable, because the are not and I can't say that alumninum are faster because they are not. But, I still prefer aluminums because they fly better for me with fixed broadheads. I use four fletched five inch vanes and feathers and use the biggest helical that I can get on 2613 XX78. That setup just won't work for me with carbons.