I've been at the archery hunting sport for close to 50 years now. Long before compound bows came into existence. I've shot and killed deer with both mechanical and fixed blade broadheads. Probably in the neighborhood of 35 or so. Having said that I must tell you that the fastest killing broadhead I have ever used personally was the 100 gr Magnus Stinger. As I recall I killed 4 nice buck with these and all fell within sight in the wooded areas I hunt. You can't beat that performance. The reason I switched to another BH is because the Stinger is not very strong. Depending on the bow I am using or the animal I am hunting I now use Rage Hypodermics or Slick Trick Vipertrick.
Many bowhunters today IMO are worried about the cutting diameter of the BH. The larger the cutting surface the more KE is required to drive it through a target. Any BH of a 1" or more cutting diameter (or even a FT) placed in the heart/lung area will quickly dispatch any whitetail. A large cutting diameter is an insurance policy for poor shot placement.