Knives! Now we're talking my language! First off, if you really are only spending 25$, the first is the Boker Papillion, its less the 25 bucks and is good quality 440. Now lets talk the ultimate bug out defense knife. The difference in knives comes down to the steel. Most knives are made from steel from China. Which is actually decent, however the best knives have Japanese Steel or American Steel. Be aware of brands who claim to made in America, most are assembled in other country using American patents and claim to be made in the USA. Cold Steel and Spyderco make some of the highest quality knives available. This is easy to realize due to the companies offering warranties on their knives, at least five years, some for life. Other quality brands are, Boker, Gerber, S.O.G and Puma. A new company to the tactical knife series is Bad Blood, very low cost but good quality, I just T.E'd some of their knives and put them through stuff which had damaged more expensive brands. If you open up my bug-out-bag you will find the Cold Steel, Steel Tiger (lower image). Made from 1/8 inch solid Japanese steel, I stabbed this knife into a 4x4 post three inches and put my whole body weight on the handle. For survival purposes I'd recommend a multi-tool in every go bag, however do not CONSIDER this a knife, as most multi-tool locks are not strong enough for putting force against. Go Fixed blade and you don't have to worry about locks breaking. And that steel tiger image is small but the knife is 7.5 inches long