Bayhunter like i said at the top of your thread i have shot both 2,3,and 4 blade heads.I was a booking agent for the Santa Catalina and Santa Cruz islands off the coast of LA for bow hunters for many years. The amimals were hogs,spanish goats and sheep.Had alot of time to see the effect of all three styles of broadheads.I have also shot bear,elk, deer, ect.It all came down to this.All do great if put in the right spot.I have had good and bad blood trails with all three.I did find a few things that eadged the 2 blade.More often i got two holes,another was touched on by some earlier,3 and 4 blades seem to have more fat,guts,ect that clog the hole.I really have found the 2 blade a advantage for me.Hope this is of some help.