You know, I have to pretty much agree with Roodog. I don't need a 15" blade. I like smaller more concealable knives. 3 1/2 inch blade (8-8 1/2 overall) sounds good to me
. You don't need a footlong Buck knife to blueworm someone. I also like small/medium sized karambits as well. One thing I don't like are neck knives. I cut myself on the stomach one to many times drawing it out. As for the shape of the blade, I like spear point blades more than others. And a light to medium weight. I also prefer fixed blades to folders. Carry option: Lower back on belt (horizontal) or a draw on the right hip (horizontal).
Sifu Kevin B. Smith
http://mmai.us