I'm not sure what the "winch issue" may be Owen. You're a seasoned traveller in SA so you would likely know what's needed and what isn't.
Is the issue whether to have a winch; or is it which type?
I use my truck offroad quite frequently, often in steep and muddy (clay) conditions. In the spring and autumn, it at its wettest, so the winch comes in handy on probably 8/10 trips.
It's a good all year round insurance, but used less in the winter when everything is frozen (and generally dry) and almost never in the summer which is warm/hot and dry.
I have never been overland, but doing what I do, I wouldn't be without it. In fact, if I didn't have one, my truck would still be marooned somewhere on the mountain.
As for which type, mine was cheap and cheerful, not the best by far, technically as basic as they come (manual free spool with a cable remote) it's a Superwinch 9.0 seven years old and no mechanical faults whatsoever.
If you do comp winching, yes high speed, and electronic free spool and the like would all assist, but for me I'd have no benefit.
In the bush, what happens when you get stuck in a mud hole? A winch will get you out, but maybe waffles would too. It's all a maybe, whereas the winch is all but guaranteed.
I now now have a ground anchor having been stuck where there was no trees or bushes or anything else for that matter.
I've rambled a bit, sorry, but you did pose a question, I just don't know what it was, that's all