In my never ending quest for the perfect EDC I have been looking at the 581. It has an M390 blade, G10 handles, Stainless liners, assisted opening and an axis lock. On paper this knife seems perfect for me. Don't know why I haven't paid any attention to this knife before? I have found it for less than $150 on line and will probably end up ordering it today. If anyone who owns this knife can chime in and give me some pros and cons I would appreciate it. Thanks!