I am debating whether to get the Technifibre x-one Biphase 17 or the Luxilon Big Banger ALU power 16L. I know that the Tech is multifilament and the Lux is polyester, but does that even matter? I'm using Head Synthetic Gut PPS 16 String on my Head Flexpoint Tour racquet. I can hit it pretty hard already with these strings but looking for a little bit more spin. Also some more power on my serves. So I was wondering what the difference is between the Technifibre and the Big Banger. Thanks!!!