Up until 3 or 4 years ago, I shot 3 blade muzzies, mainly because I liked their concept of practice blades, and they are no doubt a tough head. Then I got to noticing that every time I bought a new pack of replacement blades and even new heads, they weren' t sharp enough, they would barely shave hair, some not at all. A friend turned me on to wasp hammer sst' s, and buddy those blades are so sharp they' ll peel hair aginst the grain just barely touching my arm. Some folks may not think that sharpness matters, but when you have a head that sharp a couple of things happen, 1 the deer usually doesn' t even react to the shot, and 2, because of this and the fact that the cleaner cut of a sharp blade actually triggers the body to send more blood to the wound without ragged edges for clotting factors to adhere to, your blood trail is much much shorter, with many many deer dropping within sight. Sharpness is the biggest key that I look for in a broadhead.