RE: Thunderhead broadheads
I have used them for 12 years with ablsolutely no problems. I know some people that have switched from them for no reason other than they are not a flashy head. They have been basically the same for many years (although this year a new one is coming out) and I think people are just intrigued with trying new things. They are as reliable as I think you can find.
As far as matching up with fields points, dont use field points. I shoot mine all summer long with just the ferrule and the point. I remove the blades. Basically giving you a long skinny, pointed field point. Then when season comes, I put the blades back in and they fly exactly the same as the ferrules did all summer. I put a little edge back on the tip and awayI go.