I just got back from my first time out with an FBV sharpening and all I can say is WOW! I got 100/50...I think, it's whatever is closest to 1/2 inch. Been weeks since I got it done but haven't had time to get on the ice and I forget what I got. I'm very very average at skating, so the differences were pretty clear. I noticed a lot more glide and was able to carry more speed. Edges seemed about the same, like a nicely broken in 1/2". I wasn't sliding out or feeling like I was digging in too much. Another big plus is actually having a quality sharpening. I hadn't noticed how off my previous ones were until going to this new place. I'm a very happy convert, and I'm never going back to a normal hollow unless it's unavoidable.