New to knives. I'm looking for an assisted release or regular flip opening folding knife good for EDC and self-defense as a last resort. I'm wondering which locking mechanism is least likely to accidentally be released. The push button/plunge and axis/SOG "XR" mechanisms look convenient, but also seem like they could easily be released by accident. I've never actually used either one. I have a cheap liner lock knife that doesn't always securely lock so I'm kind of wary of liner locks. Suggestions? Opinions?