ORIGINAL: Leathal Diamonds
Isn't the spine stiffness based on the arrows "original" length of 30" or 32"?
I think you'd have to figure in arrow length too. If he has a short draw length he could cut the 4555's down to the "correct" length and stiffen the spine that way.
However, if he has a longer draw length 29 or above, I'd say the 5575's would be better.
my 2 cents
I just learned a few days ago that thearrow spine is based off of 28 inches of arrow length, not 30-32 material length. He stated 27.5 inch arrows, so I trusted that he already had them cut at the length he was happy with. I think that we can all agree that the 5575's are the better choice.