I shot a muzzy 4 blade. 90 grain. I absolutly love it. shoots the same as my field tips just drops alittle more. So if Im shooting 25 yards with field tips its 20 yards with muzzy. I shoot a 07 gardian at 65#. I personally don't like mech. because I feel it is one more thing to go wrong with my setup. As far as I care I like one less thing to worry about.