never messed with magnus but muzzy is a good head i would be shooting for the four blade hey the are still an affordable broadhead. I have sticking is a shorter head in lenght. if have the extra cash get some find a broadhead shoot some where and see which flies better or last longer.
Muzzy fingers in the front have broken off in the front for me. But I am not going to condem the head for lack of strength thru 30 targets.
Good luck this fall.....