It all depends on what you're looking for.
The Buck and Case are two different approaches tot he same tool. If I can make an analogy, if they were trucks, the Case would be a nice pickup with all the trimmings like nice upholstery, trim, ex. The Buck 301 would be a new army deuce and a half. Rugged, built for heavy duty use. Okay, maybe not that extreme, but you get the idea. Both are good knives, both will do whatever you need to do, cutting wise. But the Buck, especially the new 301's vs the old Camillus 301, are brutes of a pocket knife. I think the Buck would handle the dirty work better, and I know the Buck 420HC with the Bos heat treat is great stuff.
But I have to admit I have a strong personal prejudice to the Buck. It was an old Camillus 301 I carried for 25 years as my edc, and it took everything throwwn at it, in some pretty rough parts of the world. As I understand from 300 Bucks, the new ones are even better. That would be a tough act to follow.
On the other hand, being at the stag of life I'm at now, I don't need an end of the world rugged knife, and appreciate the nicer touches now more than when I was young. Nice jigged bone, the gentle patina of CV blades, all are nice. I'd rather drive a nice pickup now than a deuce and a half. Both are good knives. And the Buck has way more choices than I had back in the old days. There's yellow scales, black scales, red scales, and some even from the Buck custom shop with horn and stag.
Carl.