I have had a 10-3 that I carry in my gear bag on a daily basis. In addition to mainly opening up and breaking down boxes, I also use it for dressing out game birds.
Recently, I have picked up a Model 8 and a 26, either one would suffice for EDC, but my primary use for those will be for hunting. My next acquisition will be a Model 5-4 and I think that will be my knife of choice for all around every day packing.