CRKT Fulcrum 2 -- bought a couple of these, then bought a couple for my sons, - then I bought a couple more for gifting to friends & family. A patented opening mechanism, which at first - no one seems too be able to figure out. A guy brought one to the club a while ago, passed it around the table - 8 guys looked at it - taking a minute or two each,- no one was able to figure out how to open it. They come in 2 sizes, at a $30 - $40 price tag. One of the guys, a machinist - toolmaker was able to figure out how to open it in about 6 - 7 minutes of fooling with it. I'm sure you could win a lot of bar bets with this little knife, and get it to pay for itself. You can look up the opening method on YouTube, but PLEASE DON'T POST IT HERE, they do not come with instructions - the owner had to go to the web to find out how to open it. A well-made little liner-lock, one hand opener, with a non-reversible pocket clip. It does open easily with either hand. Larger one is 4 1/2" closed, with a 3 1/8" blade. Smaller one is 3 7/8" closed, with a 2 3/4" blade.
Be careful of knife addiction - at the present time there is no known cure.