Hi over there!
I have been using spyderco folders for more than 15 Years. Especially those with steel handles do very well. The only one that failed is with FRN handle, the spring is breaking out of its place.
A Number of linerlocks I did put aside, they don't seem really secure.
On search for a perfect folder I ended up with two CRK sebenzas, one of them is my edu. For every cutting, prying or hacking Job that needs more than that, I use fixblades, mostly the Busse's. Try to have one near me all the time.
Generally spoken, IMHO all Folders with FRN handles seem too weak for heavy use.
What am I looking for: A folder lined with solid steel, with nice looking nukarta slabs, and a lock that the world hasn't seen before, and at leat 5" blade...
arno