I know a few playing Aerotech Steelfiber shafts but they were properly fit for them. Just because a shaft works for one person does not make them the best for everyone. I play MMT graphite shafts due to arthritis issues, used to play the Tensei red graphite. I always work with my fitter on what I need, not what my buddies are playing. Good luck and hope you get dialed in on what fits your specific swing.