Those are great knives. I had a 560 that I got used for cheap and sold it later for a bit more than I paid for it. Little heavy/bulky for an EDC folder. I am not sure why they didn't originally do them in the XM-18 size instead of the larger format that is more like an XM-24. I am back to my old original plain edge Benchmade AFCK in ATS-34 that I have had for at least 20 years.