Are you a tournament player??
Breaking racquets and strings like this is hard to believe.
I haven't played with the yonex 89 tour , but I know a couple of people who do, so I'd look into that, Yonex quality is very very good.
2X YY 97T 310 with YY PTSPIN 49/45. (Ezones Xi put away for now) 1x Yonex Ezone Xi Team Plus (Poly HS 54/50) for doubles---Yonex PC Light!