It all depends on who is doing the FBV there are a few tricks to really getting a solid hollow and making it a noticeable difference! try going back to the FBV .............see if you notice then! I've tried that. I had FBV done and been skating on them for about a few months. To see if I was really missing anything or if there was a great difference, I went back to the traditional sharpening. That lasted one skate. Huge difference. the big difference was seen when gliding. Turning difference was negligible. Although, I have to lean more with the FBV. But gliding was where the difference was tremendous. The energy expended was so much less. I am 100% sold on the FBV. I use Bob at No-icing. He's been right on every time. B)