I've hunted with Muzzy for coming up on 17 years and never had them let me down. The only time they have is when I didn't hit the animal right, pass through's have been great with awesome blood trails.
It really doesn't matter what broadhead you use, if you don't hit the animal right none of them will perform they way they are meant too.
I've used the Muzzy 75 for the last 5 years with great success as well. Nothing else will be in my quiver.