Some wimply aluminums do weigh out about the same as carbons. Carbon/glass composite arrows weigh out about the same as some pretty sturdy aluminums. But generally speaking, the ICS type all-carbon shafts weigh substantially less than aluminum arrows of equivalent spine.

Along with the detailed specs, you also might tell us what you intend to accomplish with your arrow selection. Do you want light and fast to pick up a few possible extra points on the 3D range? Do you want heavy for maximum penetration on extra large game? Do you want a large diameter to break lines for indoor spot league? Or are you looking for an all-round arrow for deer hunting and practice? Different arrows for different applications.