I have been playing badminton for sometime now, but i have never understood what are the difference of the various compostion of a racket. For example, what is the difference between High modulous graphite and carbon graphite? Does it get more stiffness and durability? One thing i am also curious why doesnt yonex racket have kevlar or woven tech like Yang Yang and SOTX? I just had a wild idea, Why cant yonex have a Gummetal, muscle power frames, ti mesh with elastic ti, ultimum ti and nano carbon on the shaft?