Go with the Buck.
Based on my own experiance with Buck knives, and those of my fellow service men, you can't go too far wrong with one. Its backed by a company with one of the greatest warentees in the buisness, as well as the nicest family you would ever meet. My own use of Buck knives goes back to the 60's, and I never had one let me down.
The added thing for me is that at the Blade show in Knoxville, and later when they moved it to Atlanta,I had the chance to speak to Chuck Buck and his reps. Once in a while you get a feeling about a person when you can speak face to face with them. The Buck family is our kind of people. I trust them.