Tried this today in my RDX 500 MP at 57/55 lbs and it felt like an ordinary string. Nothing really special about it. I thought there were going to be serious differences, for the good or the bad, but it was more of a "bleh" string. On the other hand, I liked Big Banger Original in my RDS 001 MP. Lots of control. Even though I was not overwhelmed, I felt comfortable with it. Still waiting for my new sets of Head Ultra Tour to arrive to confirm if this string is as awesome as I felt it when it came in a used strung RDX500 I bought from another TW member.