good thread..... If I made folders I'd be carrying one for sure, and as for the last 6 months I haven't carried a fixed... this phase of mine comes and goes....
I've sold many of my folders, what you see below is what I've kept all are users and get carried regularly.. each one with their own purpose for whatever/wherever I intend to do/go..
1> Kershaw skyline: my complete construction phase abuser.. I have two and the original one is almost a toothpick now.. great value knife and light although high ride.
2> Buck Pro Vantage s30v: another construction, rough outdoor user,this knife carries great and love it, its a little heavy and I'm going to take the liners to the press very soon..
3> Spyderco Sage: more of preppy church type outing, no thrashing involved... nothing not to like, to me its perfect in everyway.. matter of fact when the Chapparel come out I'll be the first in line..
4> Spyderco Delica: gets used for lighter duty as the blade is super thin, I've polished out the grinds on this one.. spine and all... great knife but rides a little high for my liking..
5>1971 Puma Junior: a little sentimental value here.. gets carried in dress clothes or where people may fear for their life if they see a clip on my pants

never used for anything heavy and is pretty much pampered..