I shot aluminums for 20 years. Loved 'em and still have a LOT of 2315's in my garage. When I bought my last bow, the shop owner talked me into buying CX Terminator Selects. He said they recovered faster and offered the best comination of speed yet enough weight for good penetration. I shoot completely through nearly every deer I hit -- did the same thing with aluminums too. The carbons do seem to be more durable though--they either break or return to straight. Once I bent aluminums, I wasn't very good at correcting the problem.