I was leaning towards raptor tricks untill someone mentioned they don't offer replacement blades. I am kind of thinking of a scwacker after that. I was planning to tryan arrow around 500 grains with a 28.5 draw around 65 lbs out of a 335 ibo bow. Shwacker offers a 1.5" 3 blade and 2 blades from 1.75-3". The main reason i am leaning towards the shwacker is that i lime the fact that the blades are new when they open after getting through the hide, and possibly ribs. So the question remains, 3 blade or 2? If a 2 blade how big? Im not sure what is the biggest i can go and still get relaible penetration.