I have a spyderco tasman salt in H1 as well as a benchmade 111h20 in N680. I cannot speak to the corrosion resistance of one steel vs the other as neither show signs of rust. I bought the spyderco for my brother, he camps, rock climbs, and sweats religiously. I liked it quite a bit and decided I would purchase a rust resistance knife for myself; thats when I bought the benchmade. I only started buying "higher end" knives a few months ago (emersons, benchmade, hossom, schatt and morgans, queen, spyderco, etc...) and am still getting a feel of what I like in a knife. What I can say for certain is that I like both the spyderco tasman and the benchmade 111h20, but I like the spyderco better. I think it carries better, it seems more solid ironically, its easier on the hands (the 111h20 scales are rough) and I like the simple back lock on the spyderco more than the axis lock on the benchmade. I cannot attest to the steel itself other than the n680 seems almost... gritty? when I put it on a stone. I know that sounds weird but that the only way I know to describe it. The H1 was easy to work, not soft, just not overly resistant. The n680 though was different, it felt like I was sharpening a stone not a piece of steel? Again, I know Im going to get torn apart for this but w/e, thats the only way I know to describe it. I can say they both take an edge well and the n680 keeps it pretty well, I cant speak for the H1 retention since its my little brother's edc, not mine. I hope something in there somewhere helped, sorry if it didn't.