Buck makes a good user in 420HC that holds an edge better than Case Tru-Sharp.
Queen makes several NICE stockman models with Amber Bone scales and D2 blades. Be prepared to resharpen the blades, though. IMO it's very much worth the effort.
You might also try the Case CV steel models of stockman. Not stainless, but holds an edge better than the Tru-Sharp. Holds an edge about like the Buck, but the finish is nicer.
I don't know if they are out yet, but I've seen reference on their web site to a Canal Street stockman in 440C. I have another Canal Street model and am quite happy with it.