Just passing through on the way to my market stall, but I can add my 2p's worth on this one.
I was trafficking in what I consider to be the superior Australian models a couple of years ago, but not any more. Knocked out by some farmer in NSW, they were nearly functional and cheap but - soldered and galvanised - could be better. (I optimised mine a bit).
Next time you're in a bookshop look a p.156 of my new blue Sahara book for pictures (or the colour pages of the old edition).
I still get good reports from people who bought them.
In the UK everyone and his dog sells those utterly poxy Kellies
) which, IMHO, proves they don't actually use use them (or are already in the final stages of Altzeimers ;-). Overcomplicated and unfuctional. And look at the price!
Besides books, one of my lesser time/money wasting projects has been to produce a good range of v-kettles® as I sometimes believe they are a great idea. I made some designs based on the Au model and finally got a couple of protos made in s/steel but the guy did not get it at all - used a sawed down a drainpipe which weighed a ton and would not conduct unless siting under a Saturn V rocket on lift off.
Realistically, I know the line would need to be bashed out in an Asian sweatshop, like all of today's lightweight s/steel camping pots and pans - and how do you do that without going broke before you start?
At times I still think, what's so complicated about a regular pot resting on a few rocks around a fire (except that in windy conditions a V is much quicker)
So far I have only developed a webpage which is currently occupied by the "pratkettle":
Author of Sahara Overland II hardback edition and the Adventure Motorcycling Handbook, among other things