You can get some good deer camp debates going on the effectiveness of expandable heads. Bowhunters argue about broadheads like rifle hunters debate the best bullet. I have a couple friends who will shoot nothing else, claiming awesome blood trails and quick recoveries. Another buddy, a former guide/outfitter, eventually banned expandables from his camp, saying he had never followed so many blood trails that led to unrecovered deer. He lost some business after he enacted this policy, but didn't care.