I have been spearfishing for several years now, mainly with polespears and hawaiian slings. I have decided that it is time to move up to a speargun. Mainly diving shallow reefs (10 meters) I will be targeting snapper, yellowtail, jacks, and the ocasional mackerel. I have decided to go with the 120cm RA. While not overly concerned with the cost, my question is whether the carbon fiber gun is really worth the extra $100-150. What are the advantages of carbon, and is carbon really that much better than aluminum?