I was given 8 Easton Superlite ACC 3-49/390 from a friend. Here's the situation, I was going to go buy some more of the Gold Tip XT Hunter 5575 that I usually hint with but was wondering the these Eastons would work. The GPI is not much different from the Gold Tips. I know I can find the spine information on Eastons website, but I'm curious as to what you all think. It will be shot from my Hoyt Vipertec with the weight at 63# (I believe) at 29". I'll be hunting whitetail and know the smaller diameter will help with penetration, but worry the spine is too limber. Thoughts? Guidance?