It really dosen't matter what mech. you shoot a well placed shot by any of them will do the job. As far as durability I have only a few that I can speak on, The best by far were the spitfires. If I had to choose one it would be a spitfire. Don't forget about the cut on contact blades, now a days they fly just as good as a mech. Magnus heads from what I've heard fly real well, steelforce makes a unbelievablely sharp head ( sharpest out of the box made today) and they fly real good but there is a little noise when going thru the air. If it were me, for a cut-on-contact head , 75 or 85 grain head in a magnus stinger or a steelforce tit. hellfire or a steelforce sabertooth serrated. Good luck