You make it sound like carbons are all straigher and most of them are not. Most of the fancy shafts like the axis are .005 and the lowly/commom alu shafts are .002 and the cabons cost twice or more. The XX78 is not Eastons finest or straightest either. Some how you think .005 is better than .002. The shafts that you are talking about are not commonly available everywhere. Besides couple of thou isn't going to make a pinch of coon's you know what difference. The biggest difference in a lot of "better" equipment makes is confidence. If you make a living from this stuff then you know that better than I do. Carbons are a marketing tool. A cheaper alu will kill just as well as a carbon. Like I said earlier I have both and more carbons now than alu. I have nothing against them whatsoever and I am not going to tell myself I will harvest more game with them. Sure if I were to shoot a 3D then for many reasons I would use carbons, hands down. I would hate to be aquainted with anyone that needs carbons to make a kill that an aluninum shaft wouldn't do because he would be an alien from Pluto.