A guy can never have enough knives in his collection. Although the Ka-Bar Becker TacTool ($80) technically isn't a knife, it still fits the profile of a versatile cutting tool. This personal defense tool designed with law enforcement and emergency response team in mind features a partially serrated combo straight edge, 7.75-inch blade constructed of 1095 carbon steel that works for lifting stubborn hinge pins, prying open doors and windows, cutting and chopping, bashing out windows, and more. [source]