Having shot both ALU and Car I would choose Carbon for the same reason as Redline. Reliability & Ease of use. You still need to spin your carbons though. I have had a few that for some reason got bent or something to make them wobble a little bit. The carbons are much more forgiving when you pull them out of stiff targets like 3Ds or Bloc style targets. There are pleanty of them to choose from also. If you go with carbons make sure that you do test them for cracks before shooting. They can be very dangerous if shot with a crack in the middle of the shaft. As far as accuracy goes there is no dif when all things are equal.