RE: # of blades
I am a fan of Magnus stinger buzzcut 4blades at 100 or 125gr.
Or the Magnus snuffer 125gr 3blade broadheads.
The way i figure... Go with a heavy head, heavy carbon arrow and the highest pondage you can comfortably shoot, Maxium kenetic energy and maxium cutting diamiter with out loosing cutting power. sure those expanders can open up to 2 inches across but if they hit the wrong way from an arrow thats too light u might not get threw the ribs.
also you got to think about the ribs, because a triditional 2blade like a magus stinger or a zwiki.. you can hit a rib and it will turn flat and think and slit it intwo and keep going or it can turn to pass between them. A magnus 3blade can slit it the same way or slip between it. a 4blade magus buzzcut has half saw tooth and half razor main blades with razor bleeders. that will take out a rib or a shoulder blade....
I just dont like expanders... we all make mistakes... and I know far to many guys who have a rage or a nap expander hang up in the ribs as its coming open or but penitrate a bucks shoulder blade.
But thats just how i see it.