I think they are a great head. Very STRONG.. I switched to muzzy's for a couple years and I found that the muzzy's didnt' quite hold up as well as the thunderheads.. I decided to switch back this year.. Threw one on the other night, spun tested it, shot it, and Shot right with the field point.. I think they hit HARD, Make a Great HOLE, smash BONE, and fly great too..