Well, I switched to mech's this year STRICTLY because I wanted the large cutting diameter. Rob is 100% correct in his assesment that most times people use them as a bandaid, because they aren't willing, or don't have the knowledge, to tune the bow and arrows properly to get fixed heads flying correctly. In my case, that's not the reason. I'm getting a 2" cut, which is twice as big as most fixed heads.....That's twice the damage, twice the bleeding, and in theory, dead deer faster.

Rob is also right.....Put a fixed head where it needs to be, deer dead fast. One of the does I shot last year.....actually, now that I think about it, BOTH of the does I shot last year were shot with fixed blade heads, and neither made it farther than 50 yards.