OK....you guys are always coming up with questions like.."if you could have only one folder (one Benchmade, one fixed blade.....whatever). What if you could have only one sharpening stone. In the wilderness.....to last....say five-ten years. Without it you use rocks. For use on your 9" Becker, Trailmaster, Tigershark, or one of those really expensive jobs.....all the way down to your Victorinox paring knife. What would it be and why? (it would be nice to hear some expensive and not so expensive choices....and....is this too much to ask?..........some fairly inexpensive stones). Real stones, synthetic stones, diamond stones.....have at it. Remember, you're in the middle of no where, so no EdgePros and stone pools.