I buy broadheads knowing they will never get a sniff of a deer. I buy them to test with and see how they fly with my bow and setup. I buy them to practice with and the practice ones (or blades)need to be replaced after a while.A largemajority of the broadheads will never even get loaded onto a deer arrow but that isn't why I have them. I have them so that I know that if they do get put on that arrow they will fly like they should and I can trust them. Next season on one set of arrows I will use the same 3 broadheads I used this season. On another set of arrows I will use 3 new ones (new type) if they test well enough for me to trust them.

As has been stated before, if the bow AND the arrow are tuned and tuned together, and the bowhunter practices enough to be extremely proficient at their hunting ranges, then IMO any decent, well made broadhead is sufficient to do the job.