Anyone ever use this stuff? I just got a new set of Sonores Drago Basso strings from Gerold Genssler for my 5-string, and Gerold convinced me to try a new rosin he had come across that he says works well with his strings (very high-grade, metal-wrapped gut). I opened the box a few minutes ago, and I was surprised to see that the rosin he enclosed was "Petz Premium." Like most of us, I used regular Petz rosin early in my playing days, but I moved on as soon as I discovered better choices. That said, Gerold is a bass player who knows more about bass strings than anyone else, so I'm going to give this stuff a shot and will report back. In the meantime, I'd love to hear if anyone else has used Petz Premium and has any comments.