I recently switched from a Head Ti Radical MP to a Yonex RDiS 100 MP and from Prince Topspin 15L to Kirschbaum Pro Line II 17g. This my first co-poly or poly experience, and I'm liking it. I got it strung at 58 lbs (max is 65 for the RDiS), and I've played with it for about three weeks now. And I think I might be liking how it feels now more than when it was first strung. It could just be that I'm playing better and not have much to do with the tension, but now I'm wondering if I should go with a lower tension when I re-string it. For a while I was thinking I should string it tighter because I felt like I wasn't getting the control I needed from the new racquet and string...but now since it feels good I just don't know. I've always gone by the rule that higher tension equals more control/less power and lower tension equals the opposite. But with polys/co-polys, I think I've read it's also gets "deader" the tighter you string it. Is there any other "rule" to keep in mind with this type of string?