BabolatCombo Pack RPM Blast 17 Plus VS 16 Tennis String

I got a babolat pure strike tour for christmas which came with xcel strings. i struggled to get constancy with it and decided to change and got this strung @55lb. The strings actually feel better after a few hits. All i can say is what a difference.it makes. Everything i hit was dipping inside the baseline and on the singles court passing shots became a breeze. i am also now able to place my serve especially the slice out wide. the only minor problem with the strings is they fray quickly. w