I agree with BG Fisher on this one. First of all, most cheap carbons don't really meet the specs they claim for them. Second, the spine is not considered too important by many companies. Third, how long can you shoot that arrow, and still have a straight arrow that spines right? I have wasted plenty of money trying cheap carbons, only to watch horrible runout at the nock end of the arrow, where it really makes things erratic. Put a decent sized broadhead on the arrow, and things get worse quickly. If you shoot mechanicals, you might not notice as much difference. Then again, the Carbon Tech Cheetah hunters I have spine and shoot very well, unlike the Wal-Mart Carbon Wolverines I got basically to shoot in the basement, and see just what they might do. Thousands of guys rely on these arrows every year. I won't be one of them.

In 1991, I bought a Bear First Strike bow. The limb pockets had so much slop that the limbs leaned towards the cable guard. To get the bow tuned, I had to adjust the arrow rest within 1/2" of the riser and shoot cock vane out to get riser clearance. Still that bow would shoot 3" groups at 50 yards, and had enough performance at 65# to kill any animal I would ever have a chance to hunt with it. Feed poor quality arrows to a new, 7-800 bow today, and you would be hard pressed to do any better, if as well. Better arrows have a more positive effect on shooting than the bow does most of the time.