I switched to Carbon last year and love them. I had another shot hit a branch and defelct into a tree this past year. The carbon was still usable. 2 years ago I did this and the alum. was shot. Guess maybe if I didn't hit the trees so much it wouldn't matter. [:@] Maybe I'll have better luck this year. I guess I will not go back to alum unless the carbons really prove to be a problem somehow.