The thing about Carbon Shafts is one cannot hone down the shaft to make it 'pop' they way you like. It's nearly ruined if you do.
Personally I think Carbon Shafts is a FAD and will wane soon. Priced way to high for what you get... unless you accept it like a 'Silver Ghost' in the car world. Got it (to be different), flaunt it (cause of its high cost), can't park it. due to its high susceptibility for theft.
A friend got one a month ago, asked him how it's working out.
Shrugged his shoulders and only said 'It's OK'. I hit a ball with it and... ya, it's just OK.