I just recently bought a Yonex Voltric (VT) 7 and was too excited to try it out to see the talk behind its good smash power for its head heavy quality. I compared it with my other racket which is a Yonex Nanospeed 9900. It felt like the same, and I mean it delivered same smash speed on the shuttle. I put an overgrip to the VT7 before I tried it on the court. I had a hard time wrapping that grip in a very nice way I just dont wanna take it off and redo the whole thing so I might just ask here if anyone had thought about the issue. I know for sure the NS 9900 is good with overgrip but vt7, not sure if it will need one to see its smash potential.