I have been using Mamba Black Ion Rough in my Head Extreme Pro for the past 2 weeks.
It is a really good polyester string. Ball pocketing is really good. Spin is good too but not crazy spin. I normally use Kirschbaum Pro line II and this string is at least equivalent.
The United States has become a place where entertainers and professional athletes are mistaken for people of importance. Robert Heinlein