I agree w/ some of the posts above.
Many way over think this broadhead thing.When I hear posts about little or no blood w/ this head or poor or better penetration w/ this head or better arro flight w/ this head,IMO the dissatisfied bowhunter has (1) ineffectively tuned their equiptment for the BH,(2)are sharpening challenged w/ that BH,(3) fail to put the BH tipped arro in the right spot.
I've killed stuff w/ 2,3,and 4 blades that go from 1'' to 1 1/2'' in width and IMO the advatages of wide multiblade heads out weigh the advantages any 2 blade for most of the game I'll hunt.