I was thinking about starting a thread along the lines of "Why do you EDC the knife you do?," but this is close enough. Here are my priorities for my EDC knife, in no particular order....
-Thin blades, flatground highly preferred. Drop point is my favorite tip style, followed by clip and spear. Optimal blade length is around 3 - 3.5 inch cutting edge.
-Its kind of a given, but high level of sharpness maintained. General use folders are usually left with a slightly coarser finish than say my SAKs, which get used mostly with food, shaving and whittling.
-Comfortable handle. I'll take something fat and long over a thin folder that rides easy in the pocket.
-Aversion to thumbstuds, opening discs, liner and framelocks, full steel handles, chisel grinds, tantos, blade or handle cut-outs, recurves, pocket-clips, thin handles, thick blades, low saber grinds and folders with handles that readily flex.
I don't have very strict criteria. Even some of the rules above are broken, such as my fondness for Alox SAKs contradicting my avoidance of SS handled knives. Main priorities are thin blades with a good grind and useful point shape, packed into a comfortable handle. I'll take wood, brass, FRN, G10 etc for scales, carbon steel or stainless from 420hc to S30V for the blade and weight simply is not an issue with me. I take the clips off all my folders, I care more about ergonomics than keeping a knife clipped. Prefer pocket carry anyways, even with 110's or the Spyderco Manix. My most frequently carried knives in order are an Opinel #10, Victorinox Farmer, Buck 110 and Vic Nylon Solo. Vic Rambler or Classic with an LED attatched to keyring often compliments one of those, especially at night. I prefer simple knives with proven designs for comfort and raw cutting ability.