i shoot alu but i also have a dozen carbons hidden away if i ever get a itch for speed. i cant ad much more to the above posts except for how much i am pleased with my easton super slam's. i have been shooting the same dozen for about a year now and i shoot them on a regular basis. i also am lucky enough to be a machinist working in a shop with lathes equipt very precise dial indicators (micrometer type tool designed to show runoff in straight shafts). every few weeks i have been checking my arrows for straightness because the super slam comes with a warrenty. well let me just say when i first got them they were all within 0.0005, i dont expect this with the next dozen but thats really mind boggling how something like that could be made that straight. well anyway i checked them last week, there was some runoff but the needle on the dial only showed 0.004 max. thats with arrows that have been well abused and hunted with. i have only good praise for modern aluminum but i still also give carbon high marks