Y'all know I love my DFLE. It is surely tough. And edge holding is amazing for S7 steel. But the SR101 steel seems to be a bit better in edge holding. It is plenty tough enough, as we have seen with the Waki. I think SR77 is even tougher. But INFI has the edge holding and the toughness. At least it has that balance of both. And it is much more corrosion resistant than the others. But INFI is expensive. So we have the Swamp Rats and Scrap Yards. Busse has the high performance knives covered. In smaller knives, I'd just as soon have 154Cm as INFI, because I just don't use them the same way I use choppers. In small blades, I use folders. I just don't use small blades that hard. But some folks do.