I had a terrible time with a set of Muzzy 4 blade 90 grain heads 3 years ago......random flyers and the one shot I took the head was damaged badly after hitting nothing more then a small rotten tree root. I dug up around the arrow to be sure no rock was there.

Most everyone that uses Muzzy has nothing but good things to say about them so I guess my experience was just random bad luck.

Anyways I have been using Magnus heads ever since and they are so good it's amazing. My arrow passed through my buck this year and jammed in the ground at least 6 inches.......head looked like new when I pulled it out. Put in fresh blades and ready to go.