For example, I felt almost no difference between a full set of Big Ace and a hybrid of Big Ace/X-One Biphase. I mean, it felt a lot softer. But besides that, I felt almost difference in playability. So I was thinking, why not just string with a full set of Big Ace? Its cheaper and less of a hassle than with hybrids. But on the other hand, will I develop injuries later in life using poly?