I love my 586, before I bought it I carried a 580 for close to a year as my main edc. I did take the assist out of both and that made them much more enjoyable to me. But I'll put it this way I went from owning around 25 benchmades this time last year, and they've all been gifted, sold, or retired with the exception of my 586 mini barrage. I usually carry two knives with me (one larger heavier use and one to smaller to use in front of people) and you won't often find me without the 586. As for the 580, I gifted mine to my father after a trip to the spa and a new sharpening, I had beat up that knife (read batoned, chopped and innumerable other things folders shouldn't do, it also made the trip to philmont scout ranch with me) and it looked brand new when I handed it to him. He's had it for almost a year now and has used it everyday pretty hard himself, and it still looks and functions like the day I picked it up from the store. What I'm trying to convey is for my purposes this is the best knife benchmade has produced, I'm sure you'd be very happy with any model in the series.