You'd have to change your sig if you change heads lol
I switched to blood runners a couple years ago, lost a deer on them, and switched right back to my standard, 3 blade 100gr muzzy's.
No matter what you use make sure you shoot them before hunting. I used Muzzys for year. But when I got a new bow I couldn't get them to fly right. Between 2 pro shops and friends working on it they still would not fly true. That was the reason I switched to rage.
I got a pack of rage 3 blades for this year, how do you like them?