I also want it tough as hell
I second Rat's opinion about ESEE knives. I like them a lot.
On the other hand, my buddy carries a Becker BK2 around in the woods and stuff, and if you want a tough knife, you need not look any further. I don't know that you could ask for a tougher knife, and it's pretty comfortable to use to boot.
For general purposes though, the good old cheapo Frosts of Sweden Mora Clipper is what I like. I resisted them for a long time, but after reading so much about them here and other places, I decided to order one and see what I thought. After all, they are only like 12 bucks on KnifeCenter.com! I was amazed. Not anywhere near as stout as the BK2 or, for that matter, any of the knives on your list, but it was tough enough to hold up to some batoning, was and is excellent at all non-abusive camp tasks (slicing, feathering, carving, etc.) , is easy to sharpen (in fact, it stands as the only knife I have that I actually can sharpen. my sharpening skills blow), and is very comfortable to use. Also, as mentioned, 11 or 12 bucks.
Any real use knife should have a full tang, the handle should be slabs cut to match the steel beneath.
Normally I agree with you, but the Mora doesn't have a full tang and it is pretty awesome as mentioned above. Plus, keep in mind that is a pretty old design so it has been tested again and again. To be honest with you, I sort of don't get how it performs so well. It makes sense to me that a thicker (to a reasonable degree) knife with a full tang would outperform it in most tasks, and for some truly hardcore users, maybe they do. For me? The Mora actually performs considerably better than the bigger knives at most tasks.
Of the knives you listed, I like the BK2 the best, and I think it is the best choice of the bunch. When you order it though, I suggest also ordering a Mora and trying one out. I can almost guarantee you will be surprised!
