My Dear Friends,
Informative thread.
In fact, it seems to have confirmed my suspicions. I have been considering an RC-5 but have been waffling, asking myself if it has any significant advantage over the RAT-3, RC-4 and RC-6 that I already own.
FWIW, I will not be digging with my knives. I will not be batoning except under the most extreme emergencies - I have other tools designed for such things and consider it abusive of a knife to beat on it. Yes, I know the RAT knives can take it, but I still defer to the adage that "a knife is the least effective and most expensive prybar that you will ever own."
Of the three, I am leaning heavily toward the RC-4 as my favorite - it seems to possess the best combination of strength, weight, and size. The RC-6 will probably be more of a dedicated camping blade and the RAT-3 an EDC always-on-my-person blade.
Incidentally, this doesn't mean that I won't get an RC-5, just that it isn't a "I have to have it right now" kind of priority.
Speaking of which...well, never mind.

Rather than hijack this excellent thread I'll start another.
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Hannibal