I had my MG prestige mid strung with cyberflash (mains) at 62lbs and the gamma live pro (crosses) at 66 lbs. In general the experience with this string set up is horrible: i could literally hold my racquet to block back shots and the ball would fly from one end of the court to the other. I have been playing with cyberflash for a long time so I know for sure it's the Gamma live pro that's causing the problem. What amaze me is that even at 66 lbs, how can a string be that springy !? Anyone else want to share their experience with the Gamma live pro string ?