I have been eyeballing the Sumo for years. I was happy to see Kubey pick this design up. For the price this is one of the nicest knives I have and 1 of the best button locks I own. Outta box with a lil button stick. But after a few days of fidgeting it went away. Love this knife and its been in my pocket since I got her. Thank Justin w/ WMK for the deal.