There are several that I really like and I carry some kind of SAK always, but the Multi-tool that I've EDC'd for the last couple of years is the Leatherman Surge. I like the size for one, the interchangeable bits, the interchangeable Saw blades, the good locking punch, and the scissors that are capable of cutting more than just small stuff.

I like the Leatherman Titanium (Charge) a lot too, and if I could, there's two things that I'd improve about the Surge, to make it even better. One, I'd give it handles like the Leatherman Titanium (Charge), and two, I prefer to have the S30V, or 154CM blades.