I have always like that SOG Daggert, but I have had other knives similar over the years.
You have to ask yourself, what are you going to use it for??? For lookin' cool? For lookin' threatening? Well the Daggert certainly does that.
Grandpa taught me a few things as a kid and some of them stuck.
Carry a wallet. And not one of those velcro things either. A nice leather wallet.
Wear a wristwatch. A cellphone does not substitute.
Carry a pocketknife.
Form follows function in this regard.
We already have to carry around enough crap in our pockets, so get the lightest knife you can but large enough to do anything you'd need it for.
Benchmade 530
Benchmade 530 Serrated Locking Knife at REI.com
Folding, spring loaded locking.
1.8 ounces!!!!
I'm not a fanboy whore for the Benchmade above, but that one is about the most perfect thing in the mainstream market right now.
I carry the Gerber EVO, at 2.8 ounces.
Benchmade 530 Serrated Locking Knife at REI.com
When the zombie apocalypse comes, you will probably not have that BAK (big azz knife) on your person. And you won't want to go home to get it, that's the first place the zombies look, duh. But chances are you'll have your trusty folding knife right there where it always is, in your pocket.