I know, old question and one that has been beat to death. I want to add a requirement to the answer if no one minds. The answer is limited to one knife. No "I carry this one when on isle 6 in Wal Mart but whan I'm on isle 10 I carry a different one. Slight exageration but most of use have different knives we carry depending on the days activities. Not to mention that a lot of us carry two or more as standard EDC items.
Of all the Spyderco knives you have used which one would you put in your pocket AS AN EDC KNIFE knowing that every other knife was going to vanish as soon as you put the knife in your pocket (and remove your finger

). I'm asking about the EDC knife, not the one you would also need on your tool belt at the construction site or when fighting forest fires.
There are two ways to make this decision. You can make a list of pros and cons, analyze it or just choose the first one that comes to mind. Only one.
Personally, I'm more curious about the knife that comes to your mind first without much thought put into it.
Jack