If you prefer a serrated/"Spyderedge" over a plain edge, why? I'm just looking for actual user feedback. I had a fully serrated Police model while in the Marines several years ago. It was a great field knife that served me very well many times in all weather conditions..wish I'd held onto it for sentimental value, but over the years, I have come to prefer the plain edge blade for ease of maintenence, and re sharpening. What about others here?