I'm not a survival expert but I have used these 3 outdoors:
Gerber Prodigy- Tough and easy to sharpen the Sandvik 12C27 steel. I don't care for the serrations and I hear that the newer models are made from 420HC. $50
SOG Seal Pup Elite- Nice AUS-8A hollow ground blade. I had several sheath issues with SOG but I finally got the nylon multi-position sheath which is excellent. I am not a SOG fan but this knife is a keeper. $65
Cold Steel SRK. Great 6" blade made from AUS-8A. Comes with a kydex sheath and a baked on blade coating that does wear easily. $70
Gerber Prodigy- Tough and easy to sharpen the Sandvik 12C27 steel. I don't care for the serrations and I hear that the newer models are made from 420HC. $50
SOG Seal Pup Elite- Nice AUS-8A hollow ground blade. I had several sheath issues with SOG but I finally got the nylon multi-position sheath which is excellent. I am not a SOG fan but this knife is a keeper. $65
Cold Steel SRK. Great 6" blade made from AUS-8A. Comes with a kydex sheath and a baked on blade coating that does wear easily. $70