I've shot big game with thunderheads, grizzlies, zwickeys, magnus, woodsmans, eclipse, abowyers, samuri... Heck I even killed an elk last year with an Ashby 2nd mortgage. The point is they all are plenty lethal. Keep them scary sharp and tune your arrows well, thats more important than any one type of broadhead.
Jeff
However, I never listen to my own good advice.
I am a broadhead manufacturers dream, I'm always looking to try something new... This season the werewolf sounds fun. In fact, maybe thats my real point, try them all out... thats half the fun.