Each one of my compact bicycle repair kits (one lives on each of my bikes) contains a Squirt PS4. There is a New Wave in each of my wife's and my hurricane preparedness/evacuation bags and another in my truck. My EDC bag's toolkit contains a Skeletool CX. So, I'd say it's a tossup between the Wave, PS4, and Skeletool CX. Lately I've really been digging the CX though. Such a high quality minimalist MT.