1. Spyderco Police model. Its one of the older ones, plain edged, flat ground, g10, with an ats55 blade. After a little work with the sharpmaker a while back it is by far the sharpest folding knife I have in my possession. I don't know why this steel didn't catch on, but on this particular knife at least I like it. This is the knife that is in my pocket most of the time at work and it gets used a lot. This is my go to beater knife for actually cutting stuff on the job, and it takes everything I can throw at it.
2. Benchmade AFCK. Again, an older model with the liner lock and ATS34. If I don't have my Police model, I probably have this one. Like the Police, its a good, solid knife that I don't feel bad about beating on or possibly losing at work.
3. Spyderco Millitary. S30v serrated edge. Before I found my Police that I had thought I lost this was my standard user. If it were plain edged it probably still would be.
Honorable mention:
The Civilian I keep tucked into my vest. It hasn't cut anything, and probably wont, but it goes everywhere I do at work.
The new BM Gravitator spearpoint. I have one of the prototypes and it has become the knife I carry more than not when I am not working. Looks classy, Amazing build quality for a production knife, and sharper than hell.