Of the larger fixed-blade knives I've handled the Becker BK2 is one of the better ones. Simple, tough, small enough to wear it covers the bases. Inexpensive and completely un-flashy are good also.

It is a bit bigger than I usually carry, even for a large fixed blade knife I would rather it had a 4" blade instead of the 5.5" but the difference isn't a deal breaker if I'm away from civilization. A smaller knife can usually do everything a larger one can. It just takes a little more time but also might save you effort. So perception is the real difference. Wear a knife with a 5" to 6" blade while in the woods and you look prepared. Wear the same knife in an urban area and your a nut. A large folder might be better if you like a larger blade.