I'm an owner of a Muscle Power 100. I currently this racket to San Diego Badminton Supply to get this racket strung. I told them to string it with BG-70 Pro BLACK. When I got my racket back...they strung it WHITE! I was sort of disturbed. But the fact of the matter is this...I saw the 70 PRO letters on my string...then I suddenly saw BG-65 Ti! I have two types of string on my MP100! 70 Pro main..and 65 Ti cross. I told them to string it at 20 lbs. But I never thought they would string it with 2 different strings. As I played with my MP100, I totally lost control of this racket. Kept on hitting it out, and the strings felt loose. I'm an aggressive player. I love to hit hard, but I sometimes feel that I don't have enough strength. I can clear it...but my smash is alright. Is it realy in the wrist or arm strength? Also, my partner can't clear. He could only hit towards like middle court. Any tips? Also, what about my 2 strings on the MP100? Any other type of string recommendations you guys consider?