I have a Leatherman Charge Ti with the clip that I usually carry.

I also carry a Squirt P4 occasionally.

Finally, I bought a couple of those Blasts packages at Walmart when they were on clearance. So, I keep them in vehicles and around the house.

I've got a bunch of tools from all the major brands (L-man, V-Nox, Gerber, Sog, Spyderco, ect) and I've carried them all at one time or another, but Leatherman just seems to make the models with the best tool selection for me.