I have the serrated version. After a couple of months, it's still pretty sharp. I use it to open boxes and plastic packaging, and cut plastic fasteners, twine, and rope. It seems to hold an edge pretty good, but not as well as my 440C knives (which is exactly what you'd expect). Cold Steel sells a sharpener that fits the serrations, and I'll be purchasing one soon. Sharpening a serrated blade is a pain, but I like the ergonomics of this knife a lot and I'm willing to put up with sharpening it a couple of times a year. A lot of knives open with one hand, but take two hands to close. I have no problems closing this knife with one hand and it gives a very sure grip. I don't think Cold Steel sells this knife anymore, so if you think you want one and know where to get one, then get it now. I don't think it's sturdy enough to be a tactical knife, but as a tool I love it. Just don't go prying anything with it.