Without trying to sound like an absolute skeptic, as who wouldn't be completely enticed by greater speed, efficiency and control, especially as there are very few negative comments about FBV in this thread, (admittedly only read the first 35 pages and then skipped the last 10), BUT... I have some issue, not with the result or even the theory of this 'technology', but more the practicality or perhaps the potential issues with FBV, like consistency. There are alot of comments on how their new FBV grind performed and a lot of differentiating results on some of the very same grinds. And how does one know if the grind they say they were given, is actually what they received? Wouldn't the very thickness of ones blade determine what FBV grind they should be given in relation to their old ROH? I mean the flat is a constant .090" or .100" inch, so the only variable can be how much material is left in the width. ( I haven't yet, but will be measuring a couple of pairs when I get home). Then you are setting a fixed depth of the grind (correct?) The less material in the width of the blade the less the angle of the edge itself, causing more bite. According to the chart more flat width = more bite. I would have to assume that there is a large variance in steel from mfg. to mfg. and even skate to skate, so even a minute change in thickness, .005", .010", .020" has to affect your edge or bite outcome. I mean the only available change between the flat grind is only ten thousands of an inch or .005" thousands per side (of center). Now take your local 16 yo Sportchek employee who doesn't have that wheel dead center. You're going to reduce one edge or the other in thickness even more. Does any one see where I'm going with this? Don't get me wrong, obviously i can't judge until I try it, and hopefully take advantage of the supposed benefits, but it just seems to me that the good ol ROH would be a little more forgiving in terms of consistency, and we all know how well that has worked out. So at $10.00 bucks a crack, is this fool proof or is it going to cost $40.00 to get it right? Also, (please don't slam the messenger) but I was told by my LHS (the only reputable shop in town that I would trust to tune my Dialysis machine, if they did that), that the FBV technology has been around since the 80's. And that there have been attachments around for sharpeners etc... etc... that had never taken off in the past... ecomomics and all that. nuff said, and that in advance for the constructive criticism.