All I've used is mechanicals. Started with Rocket steelhead 125's back in the 90's and had no problems killing deer. Always a pass through and quick kills. Last season took two with NAP 3 blade shockwaves. They were the cheapest heads on the shelf and seemed to work just as well as the old Rockets. First deer I shot only went 25 yards pouring blood in buckets from a heart shot. The second went about 75 after a quartering double lung.
