I posted earlier about a problem with washers, and everything is AOK now. Mine came with one washer missing. I've worked in manufacturing for a long time and I know these things can happen. I put some washers in that I had on hand, red-loctited the stop pins in the blade, blue loctited all other screws, polished out the tool marks on the flippers, and ground a choil at the back of the blade edge.
Since then, everything is perfect. No blade play, easy unlocking, blade centered, perfect lockup. The problem I had was one in a million, don't let it put you off from buying the knife.
I haven't used this knife much for utility use, so I'm not going to comment too much on the edge holding, except to say it seems fine to me. I will say that it hasn't rusted this summer, which has been the hottest summer in Ohio since the 1930's. My DDR EDC did develop a few tiny spots, but not the Cuda Maxx.
The only caveat I would give is to put red loctite on the stop pins as soon as you get the knife, they can come loose unless they're doing something different at the factory now. My knife was an early one.