Well i've been EDCing my brown FFG Endura for the past few days. It's definitely a sharp mother. I don't know. The sabre ground Endura 4 seemed to have a little more heft, which 1. I like, and 2. Allowed the blade to be flicked open easier. Not that I do that all the time. I'm really not sure which I prefer to be honest. The FFG Endura just feels like a feather in my hand. Who knows, maybe I just prefer knives with a little more weight.
The other thing (and i'm sure this is just from my inexperience) is I'm scared this thin FFG is just going to break. I know thats unrealistic since I don't do heavy duty tasks with it. But damn...its so thin! lol.