The solid feruls like the Rockets steelheads spin well. The wolverines,3 blade, 4 blade, and all their two piece heads with screw on tips spin poorly. Add the dull blades - flimsy .027 blade thickness, tiny wimpy retention screws, improper thread lengths - and you have one weak little head that kills tons of deer.
I am usually alone in my dislike of Rocket - but thats O.K.