I just replaced my cheap Frost Cutlery blade with a Schrade X-Timer. Not a super expensive blade like some I've seen, but I've owned 3 Schrade folders in my lifetime, and for a basic knife, they have always kept up their end of the deal. The only thing stopping me from carrying my old Schrade Firebird is that I can't find the doggone thing since I moved. I used it to unpack, so I know its around here somewhere.........
In any case, for everyday cutting, slicing, dicing, and mutilation of cardboard boxes, not to mention the occasional chunk taken out of one of my wandering fingers, my past Schrade blades have held up well enough. The cheap Frost Cutlery blade I picked up has already started falling apart after only a few months of use - the blade itself wiggles quite a bit when locked open. I'm glad to have replaced it with a new Schrade.