I carry a 520 Presidio and use it daily. I love the axis lock. It's extremely secure and Benchmade even replaced the omega springs on it for free. The 154 cm steel holds an edge pretty well and I can sharpen it easily on diamond stones. The blade geometry has a flat belly but it still slices ok. The point is nice for digging into stuff. The aluminum scales give it some heft, which may or may not be an issue for you.