How does the KI5's power compare to some of the racquets I've recently demoed? Past racquets I've played with include Yonex RDS002 Tour (bit heavy and can't whip the head around for topspin), Volkl MP10 Tour (Gen1), Prince O3 Tour (bit mushy) plus some of the tweeners - eg Yonex RDS003, Babolat PD Roddick. Does the KI5 still have a useful bit of 'pop'?