I came across this article while trying to find the end of the internet: http://arrowtrademagazine.com/articles/may_10/May2010-ToughBroadheadQuestions.pdf It was written in 2010 so there are some new products out there since it was written, but it's pretty much the most expansive write-up of the more popular and innovative broadheads (both mechanical and fixed) that I've run across. It's not super tech-centric, it's more of an overview of most product lines. Enjoy!
