i edc'd a D2 910 stryker for a while, no rust problems, edge stayed razor sharp all it needed now and then was a little kiss from a ceramic rod, and no rust as long as you maintain it, i would throw a little mineral oil on it now and then though, but i put it away cause i think the liner locks on the benchmade's are a little too weak for my taste. I had a 905 that was 154cm and i didn't really notice a difference other than it took an edge rather nicely, i used that one a bit more, then i lost it, thats where the 910 came in. Its really all your personal taste, but you should get what you paid for, unless they won't cover shipping, then you should just keep what you got.