I shot Thunderhead 100's for years. I have now converted to the Muzzy's. Harley is right on the Montec's if you do not mind spending the extra money. The 1 pc broadhead holds a better edge when resharpened. The 1 pc design, using the general law physics, would suggest a balanced and higher reliability broadhead. They run about $9-10 per broadhead. All other broadheads are about $5-6 ea.