That question is what came first the chicken or the egg. I've been down both roads in my 40 + years in archery, and I like fixed heavy broad heads. I personally shoot 220 grain fixed Muzzy Phantoms. But you're going to get enough answers to completely confuse you. Best thing is try some and see what makes you happy, they are going to kill if place in the right spot. I've field tested most of the broad heads on on the market, that's why I shoot what I shoot.