Well this is not really a hard one for me. The AFCK 800HS and the 710 HS are both tops! As far as durability goes, I have had my 800 HS since they first came on the market, The G-10 is worn pleasently smooth from years of carry. The action is still smooth as silk and there is NO blade play. I work in a machine shop and have used it for years without a hitch. Until I got my 710HS it was my single EDC. Of course , then I found Bladeforums. Now there is an EDC rotation of the 800HS, the 710HS, the two Sifu,single and five groove models, the MT Socom Elite, the CRKT M-16-14, ant the Spydie Native,.............and on, You get the picture. Next is the 940. Looks sweet. Have fun in your search, I have. This place will be a great help in finding good knife info. BUT, it is a killer on the bank account. HeHeHe