I EDC a Micra on my keys and a Squirt E4 in my bag of tricks. Tough little monsters, even if the wire cutters in the E4 do have a ding in them for trying to take on something as big as it is. *laughs* If I had to replace the Micra, I'd go with the S4.

The P4, not quite as much, but I don't like any of the micro pliers- no leverage. For bigger stuff, I have pliers, for little, hemostats.

My mother has the little Gerber with the scissors on her keys- I'm afraid of breaking the silly thing.