Three blades and those add on cutters don't kill any better. A long in depth study done years ago found two bladed braod head penetrate better. 100 grain arrows make your arrow perform as if its 5 pounds heavier than what you bought them for. Spines are setup for 125 grain heads as a standard.
You can maximize penetration with heavier arrows. They only cost you in cast, but if you're shooting 20 yards and under, you likely will not notice.
Are you shooing wood, aluminum, or carbon?
"If you can't have fun doing it, it ain't worth doing, or you're just doing it wrong."
River hunting in my Wilderness Systems Kayaks; Commander 120 and Ride 135
My Blog archeryrob.wordpress.com Confessions of a fisherman, hunter and tinkerer