Any comments on the NAVY K-507?

I disagree. I have about 4-5 Navy knives and they all seem good. With Chinese knives you have to go on a case by case basis. Enlan makes some good knives but also some not so good ones. I don’t have the K-507 because the design doesn’t do much for me but I would be willing to bet it is worth more than they are asking. Pretty much all the good Chinesr knives are a bargain when you compare what the same price gets you elsewhere. For $10, you can’t go too far wrong. Just buy it.