Greetings Marcus. That' s a pretty broad range you' re covering. As far as a defensive fixed blade goes, the most thought out and effective designs must go to the collaborations of maker Al Polkowski and GHCA founder Bob Kasper. I' ve had extensive experience with their blades and they are presently my choice of concealed carry. Als kydex sheath system for these blades are second to none. For all interested, go to Bob Kaspers site for some informative info on knife design. Also read about "Knifehead" Kevin Gentile and his AFCK and Stryker modications. Nice stuff. http://home.earthlink.net/~ghca
L8r,
Nakano