Never used Muzzy at all, but if you're looking for something else...where to start...lol I used the Rocky Mountain Advantage for years now, and have seen every deer I shot with them go down, but also I could see the blood trails from the tree!
This year I decided to give the Slick Trick 100's a try, and I can honestly say I'm VERY impressed with them as well. I shot a doe a week ago today, and the blood trail from her was quite criminal and gruesome. I was actually surprised as when the arrow hit her, it knocked her right off her feet, and when she did get up, she only went 10 yards before running into a small maple and expiring. I had never seen a deer taken off it's feet before with a double lung shot!
I should also mention that both heads fly like darts, and I've never had to move my sights for either one. I'm carrying 3 of each in my quiver this year.