I suspect frame locks are probably a leading contender for strongest folder.

That said, strength is good, but pursuit of strength is a good way to lose perspective.

I love my titanium frame lock Chris Reeve Sebenza. But after a while, I realized that while the frame lock is an elegant design, very strong and simple, it is really difficult to operate with one hand, esp. off-handed.

It seems in a survival situation, you should be able to use your knife one handed, and likely off-handed in case of an injury.

So, my Sebbie is now a backup and my Ritter RSK is now my primary EDC knife.

Good one-handed usability, ambi-use, and very strong.

-john


Edit: For prying you'd probably want a flat ground. The popular hollow grind is going to cut better, but more likely to break.