I carried a Gerber Gator for AGES, until I used it as a pry-bar one too many times. After that I picked up a cheap Buck folder in Fred Myers until I accidentally donated it to the Tampa TSA screener last month.
I just picked up a CRKT M21-14SF folder that seems to be well made. Purchased online, it was a little larger than it looked in the pictures but still fits well in my pocket. I really like the size and weight. The "Carson Flippers" are very nice for speedy opening, both with fingers or catching on the pocket.
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The LAWKS system looks pretty solid. I'm not going to do any destructive testing, but I will use the knife any chance I get.