Anyone? Pricing seems funky. Single pack of Volkl is $7.99 vs Tourna $9.95 But Tourna reel is $99.95 where as Volkl is $119.99 ie Tourna give much bigger discount while buying reel. Have Dunlop 4d 300 Tour. Played with Tourna Blue Rough 17 for over a year. Tried Cyclone 18 and absolutely love it. Strung at 52lbs. Hit only once though. On the TW string compare Tourna Black 17 Stiffness: 175 Energy return: 86 Spin potential: 6.3 Cyclone 18 Stiffness: 181 Energy return: 85 Spin potential: 7.1 So they are pretty similar. But do they play similar? On the Tourna Black packet, it indicates that the power is more than Silver but less than Blue. But I found the power of Cyclone to be more then Tourna Blue. So the numbers do not match.