i agree with bone buster on the impact of a 2 blade head and its affect on deer is alot of times nil.. i actually had a doe go to pick up a acorn after i shot her, she fell with in 10 yds of the hit, i had managed to slip between ribs in and out, a quick in and out matters,as far as avoiding a panic run after the shot, i have shot zwickey deltas for a lot of years both 2 blade and 4 blade and really cant tell a diffrence in blood trails, no real world experience with 3 blades, just cant make myself switch from something that works,