If I wuz gonna do an apples-apples comparison, I'd have to compare the Opinel to the larger sodbuster.
I have the large Case sodbuster in both Stainless and CV (yes, Virginia, they made the large one in CV).
For the long haul? I do believe I'd take the Case.
Yes, it cost more -- like three or four time times as much -- but in the end I prefer the heft and feel of the large Case.
For those of you whose sodbuster experience is the Case SB Jr. (or its Böker twin), you really have to handle the big one to appreciate what a handful it is.
For comparison's sake, it's the same size as a Buck 110.
From a practical standpoint, it comes down to whether you're gonna need the pointy style (Opinel) and the lock ('cuz yer gonna be poking things) or just need a reliable and robust cutting tool.
Either one will skin a deer or gut a fish.
Either one will make a salad or slice up fruit.
So it's the tasks out on the edge of "proper" knife usage that will make the difference.
I believe I'll take the Case.