A couple of quick comments from the peanut gallery:
1) Wire edges which roll easily are fairly common (in my experience) on knives which come sharp from the factory.
2) On an impact test (spine whack) the massive lockbar which gives the Manix, Mini-Manix and Chinook such high ultimate failure strength works against it. The inertia of the lockbar will tend to keep it in motion when the blade comes to a sudden stop. This tends to lift the bar out of the notch, releasing the blade. Personally, I don't think the lock notch in the blade tang is deep enough on most knives. I also feel that if impact resistance is that important to you, a folding knife is the wrong tool for the job. To quote bladeprince: "A self defense knife blade cannot fold under ANY circumstances." The only way to meet that criteria is with a knife that doesn't fold (i.e. a fixed blade knife).