http://www.benchmade.com/products/1000001
http://www.benchmade.com/products/580-583
http://www.benchmade.com/products/550HG
http://www.benchmade.com/products/740
I have all three of those edc all of them depending on mood. First two are assisted open. Sent 2 of the four in for life sharp service and warranty work on one of the assisted, had them back 1 1/2 later sharper than ever and looking brand new great knives and great service