TennisManiac
Hall of Fame
I've been playing with Alu Power for about 15 years now. I've tried about 25 different poly's and nothing even comes close to it. But I never tried Tier One's Black Knight. There aren't too many reviews out there of this string and I was wondering how it compares to Alu Power? Can anyone out there tell me how these two compare in terms of power, spin, feel and playability duration?