For me, they are flying very well. Currently, I am getting about 4" groups at 50 yards using a 135 grain five blade and 2317 eastons. I usually won't shoot twice at the same target even at that range. Blade sharpness IMO is very good on the innerloc out of the package. I used them last year with very good success. It's, hard for me to believe though that they are that much tougher then muzzy. The muzzy's tip have a large felmale thread to them, while the innerloc, has a small make thread and a shank that runs right down through the ferule. I just don't see how the tip on the innerloc could be stronger, but I'm not an expert.