first go to my website and read some to the tuning and mech vs fixed sections. after that you should have a better idea of what kind of head you want. I also have links and a few test results on the site that compare the differnt heads. I will say though that the Montecs are excellent broadheads and will get the job done. Other quality heads include Muzzy, thunderheads, Rocky ti's, wasp hammers and bullets, slick tricks, phantoms, and Magnus stingers.