Posting a favourite implies there is some quality in x over z that may give you the 'edge' in a survival situation. I don't think anyone has done a statistical study of knives used, how they performed and how many failed. But given that our armed forces send people out with knives like the USAF survival knife, MOD4 for the brits and SAKs by most of the hiking fraternity it could easilly be extrapolated more people have used these makes than say, Fallkniven, Chris Reeves, Swamprats, Sting, Excalibur or Julia Child's well honed Chef's knife. Reality is both we all have our favourites AND they all will probably work reasonably well enough building those poorly illustrated deadfalls in survival books, digging a solar still in desert pavement at high noon or chopping up a 100 year old cactus for undrinkable fluid. Thats the stuff you have to worry about, not which wunder steel your knife is made out of. I've packed everything from the USAF to a Fallkniven. I've managed to cut myself on all. I use a card sized diamond plate and a ceramic rod. <img src="/images/graemlins/grin.gif" alt="" />