I have bought Kershaw, Ken Onion with the spring assist for the last ten or more years. I gave a little Scallion to my BIL because it had been relegated to the bedside drawer. After better than 10 years, one spring replacement and a good sharpening, it still functions flawlessly and he carries it daily! I bought the Leek a few years ago to have something smaller when I need to put on big boy pants but I carry a full size Blur every day. I lost my first one and my kid replaced it last Christmas with the standard bladed, olive drab model. Can't beat the design, grips easily and positively, works flawlessly, lifetime warranty, USA made and reasonably priced!
I don't really care what the law says about it anymore!
When I called to get a replacement spring, the sweet young voice asked if I had the correct torx screw driver to remove the machine screws? I replied that I wasn't sure and she promptly told me she'd drop the tool kit driver into the package and told me to have a nice day! Service was outstanding...