I guess I'll jump on the bandwagon with a comment. Tried them first time last year, bought 2 packs, no problems with blade sharpness (all blades shaved hair on arm)...harvest 2 mature does with same head....one shot was about 15 yards away and I made a bad shot from being unbalanced (Yes I know that was stupid)....anyway shot went completely through the mid portion of the spine and through the ribs and exited...the deer did drop in its tracks and it was a quick kill because of the spine shot...anyway no damage whatso ever to the blade....I'll be using them again this year...I love them...but hey..to each his own....