I am a BIG believer and have been shooting them forever with excellent results. I even took a good buck on camera at 55 yards with the Spitfire Maxx and even with my short draw length it passed thru him like a hot knife in butter. There is a lot of hype about other heads but give me my Spitfires every time! They don't open on release, they always open, I get pass thru's and blood trails are second to none! And they shoot just like my field points but I really like shooting the practice blades with them, they just seem to pull out of the targets easier. You will love them.