Never used it, but I believe Murray fan is indeed right in hearing that. Do note: this does not apply to most strings. Tourna Big Hitter doesn't play like BHSR with less spin, Big Hitter Blue nothing like Big Hitter Blue Rough, and for SURE, ALU not like ALU Rough but with less spin. The only other great example of this that I can think of is Signum Pro Poly HEXtreme and Signum Pro Poly Plasma. Once the ridges on the former wear down, you get the latter.