Hey, I am a club tennis player 19 year old, who could play for his d3 college team, but chooses to play club. I have an all court game, with the weak point being my serves. I use the IG Prestige MP with x1 Biphase 17 gauge at 50 lbs. I was considering droppiing 49/48 pounds to get some power? would this be a decent move? I also want to maybe switch to the 16 gauge for the better durability of string because each pack of biphase only lasts me around 2 to 3 weeks. Maybe switch to technifibre nrg2 for extra cheaper durability. So basically should I try out nrg2 or buy x1 16 gauge? Thanks for your help!