Raprnblue, I tried to pM and e-mail you, but no go.
The NO-e was the first blade I thought of for you when I read your other thread yesterday.
At Blade 2003, we ahd a woman come to the table that was on a Red Cross First Response Team. She had her NO-e that she had taken to Ground Zero for Rescue/Recovery Ops. It had been used to pop doors open, both vehicle and structural.
The NO-e is about the smallest Iwould carry for outdoor use where I would expect to chop with any efficiency. The SH and BM offer more blade length, thus mass, making chopping easier.
The new Natural Outlaw model, the SFNO (Specail Forces - the handle design) would be a great blade, albeit a bit bigger.
The original Satin Jack is a very good knive for personal encounters, but, as RokJok mentioned, lacks blade mass usually necessary to be an efficient chopper.
Busse will be set up at Knob Creek in Louisville Oct 14-16. Don't know how far you are from there, but just a suggestion if you'd prefer to see some product offerings first hand.
It is hard to effectively recommend to someone when you don't know what sized blade/handle would be comfortable to the suggestee, nor your carry capability/preference.
Any of the models you've named would be effective in the field, but each for a different set of operating conditions.