It's been my experience that the finest,most effective mechs are Rockets. Of course that is following a minimum KE rule of 55ft/lbs.These heads fly and cut with deadly precision,they have ALWAYS deployed on contact and have NEVER failed me.I've tried several other heads as well and thus far the Rockets have come out on top.I've been fortunate enough to put a Rocket tipped arrow thru 14 Illinois whitetais and NOT A ONE has went farther than 60 yards!!! Rockets rule, ......bullets with butterfly wings.