OK...... shooting a 70 lb monster with a 450 grain GT Kinetic arrow I shot a large doe 2 nights ago quartering away....broke 2 ribs going in 2 ribs going out and punched through the shoulder blade. No broken blades. Replaced them and respun good as new. I have hit 3 or 4 through the scapula. NEVER had one break. The bottom line is....Everyone needs to shoot what they are comfortable with and put more focus on making the shot and being a good woodsman and hunter. The broadhead should be really far down on the list of concerns. ANY broadhead will work if put in the right place! even a 1" dia slick trick is a deadly broadhead!