Every winter I experiment with string combinations and racquet combinations until I drive my self crazy. This winter is no exception. I do like to get some help with a few questions. I currently use Unique big hitter blue 17g. It's a great string and much easier on the arm and budget than the luxlon big banger rough I was using before. I've been eyeing Kurshbaum (sp?) Spiky shark 17g. How does this play compared to the other two I mentioned? I am using prince graphite 93 (not the new version, but the old one) and sometimes switch to babolat pure drive RD plus or the wilson n-six one tour.