Either a Spyderco Sage 2 or Brous Caliber. To be honest though, I don't carry the Brous more than about once a week and it's been a few months since I carried the Sage. I used to carry a Spyderco Chapparral to work when I had a job that only allowed up to 3" blades. Once I got the Sage the Chapparral didn't get carried anymore, so I eventually sold it. Now I'm fortunate in that my area doesn't have any blade length restrictions and my employer doesn't care either, so I usually end up carrying something in the 3.5" range.