I bought a set of the 3 blades this year for my crossbow. They fly well and have as much penetration into my block target as field points and thunderheads. I was entertaining the thought about switching them onto my vertical bow but decided just to stay with my original plan of using the thunderheads. The jury is still out on my decision to buy them in the first place until they actually encounter living flesh and bone. And I cant really tell you all a good reason as to why I decided to buy them in the first place.... but like anything else.... we all like to try something new.
Alex