Dammit, I lost my favorite pocket knife today. I have carried a folding lock-back knife for as long as I can remember, and the one I've had for the past 15 or so years fell out of my pocket in the Costco or the parking lot today. No luck finding it. Damn. So now I'm in the market for a new one. Any of you have any suggestions? I prefer something small, with no more than a 4" blade. Thanks!