Yeah, it's tinker time for me in the winter, I used 2 blade zwickey head this year,the worked great loved them.
I was able to finally shoot after a 3 week injury, I had some carbons that I never shot with my bow, these limbs, I noticed the speed for sure.
But love the wood, the carbons are 50 to 75 Grains lighter, I pretty much gun barrel the arrow, and adjust the hold off the arrow trajectory, so a flatter shooting arrow in a high stress event could help me at stuff past, 15 yards.
I am a hunter 1st, so accuracy and penetration are my true objectives. Shot the carbons a few times today the got me thinking, which is usually bad.