Mechanicals will work, but a fixed cut on contact work so much better. Ive lost hogs using mechanical, I have yet to lose one with fixed heads. And im talking about lots of hog, not just a few.

My favorits and depending on bow and kind of bow are. Slick tricks, Muzzy three blades, stinger, and Monotec G 5. There are many good heads, these are just the ones ive used and like.