Jacknife- could you give some kind of list of the stainless steels you have tried. Also curious to see if the edges were similar to your sodbuster and opinel as a judge of steel vs edge.
Stainless; Buck, Case, Victorinox, Wenger, Puma junior, Gerber LST, Gerber LMF (1994), Schrade Uncle Henry line, Pacific Cutlery Company utility balisong about 1982ish, Boker, Al Mar, Camillus, Randall.
Carbon; Schrade Old Timer line, old carbon steel Puma, Boker, Case, Opinel, Mercator K55, old Bertram made Hen and Rooster, Old Bruckman, old Russell barlow from turn of the century.
I have made up to 100 cuts in hemp and after every 10 cuts try to cleanly slice newspaper.
The knives that did it were 2 out of three carbon steel. With the exeption of a 1967 era Buck stockman, few of the stainless knives made it past 50 cuts with the edge still razor sharp.
The stainless knives were okay to make it through a normal day, but a carbon blade will outcut a stainless one most times. Of interest, when I would pit a carbon blade against a stainless blade from the same company and same model knife, the carbon still was a longer lasting edge. I once took a nice stainless stag Boker stockman I had and tested it against an almost exact model stockman with carbon blades and rosewood handles. The stainless one lost. I once had two exact models Randall number 15 sheath knife. One carbon, one stainless. Again, the carbon one held a cutting edge a bit better. In very cold weather chopping through a sappling, if the stainless one hit a knot or twist in the wood grain, it had a tendancy to chip. I never had that problem with the carbon one. Best comparison was my stainless bone stag peanut vs my yellow handle CV peanut. At 75 cuts I could tell a difference. They had been even at 50 cuts through the hemp.
I carry a stainless sak as my edc pocket knife, just because I like the versitility of the Wenger SI or the Victorinox cadet 2. But my woods and camping knife is a carbon laminated Swedish mora or an old cut down carbon machete. And in spite of my begrudging them the moisture issue and light construction, an Opinel still finds its way into my pocket now and then.