I like to have an arrow setup that's about in the middle of the road. There are trade offs in everyones setups, so if your seeing great success with the FMJ's then why change. I think if you took a poll FMJ's would be at or near the top. They have good weight and have a thin dia. that I prefer, but honestly I can build an ACC or Axis shaft to have the same weight, but with a much better foc%.