I could not find any reviews about nanoray tour series. I am currently using nanospeed 80 with Bg 65 strings. Not sure about the tension. Am comfortable using this. I have tried musclepower 29 and dint like it as my shots seemed to lack power and accuracy (happened even with default strings). Then i tried apacs featherweight 200 for a couple of days and it was not good for me. Its just too lightweight and clears were difficult with no feel to your shots. So now i am planning to buy a new racket. I have narrowed it to nanoray 77 tour as well as voltric 7. Both are totally differnet. I know. But whats your suggestion should i jump to headheavy voltric 7 or stick to headlight series like nanoray. Anyway i would love to hear about nanoray 77 tour. Thanks