Recently tried the FBV and I loved it... sort of. I have the older CCM U+ with the rocket runners and apparently the guy that sharpened mine wasn't very experienced. My left skate was off, so I could not stop on my left side. Other than that, I definitely noticed a difference. My edges felt better in high speed turns. I normally skate with a 5/8 hollow, so I tried the 100/75. I went back to a normal round hollow for now, but when I replace these stupid rocket runners with normal steel I think I'm going back to the FBV.