I have been shooting carbons for 8 years now. And forgot all about aluminums. Last two deer I shot, I didn't get full penetration and the deer broke the carbons anyway. But this year, I have gone to longbow, and shoot some alum's thru it. I forgot how straight they are and really they are decently durable as long as you don't miss your target. And really not much lighter than carbons. I see no reason for you to switch unless you just want to.