I can't really think of what my ultimate knife would be but the knife I'm loving right now is my RAT RC-6. It's not the most impressive in scale or good looks, but it is a perfect light camping/backpacking knife. The balance and ergos are amazing, and there is just enough blade that I am not left wanting more in most applications. In fact the RC-6 is a "do it all" knife (except heavy chopping of course). If I'm off into the wilds and only bringing one knife it's the RC-6.