Depends on the "mood for the day". Any number of folders (as I have about 30-40). Funny thing is that my "favorite" is probably the cheapest one, an Opinel with a high carbon blade. It can be made wicked sharp, and is just so darn simple. Plus, if it gets lost, I'm only out about $5-$8. When it comes to hunting, I use a fixed blade. Mostly production ones with slender blades (KOA Bear Cub or Jager, Gorhmann T&B or Camper, or a couple other odd ball ones that I just liked). Some day I will have one from Doug C, or other makers here, just haven't had the opportunity.
Some have a "bow sickness", for me it is knives. Not from a collector perspective or needing some really high priced item, but just shapes or styles I like. Though it must hold an edge.