I have most of the items on your list, as do so many here. And the reason is, when somebody posts a bit of kit as being good, folk tend to try it out for themselves. When enough people are praising a piece of kit for its design and durability, then of course others will get the same kit.
I owned an aluminium billy can, a friend got me it and asked for nothing in return. I loved it, it was my first billy and I could at last cook over an open fire and feel like I was doing it properly. After a while, I noticed more and more people singing the praises of the Zebra billy, and noticed that mine wasn't coming clean and scouring pads were ripping the inside apart. Also, the thin metal meant I burnt food very easily and had to check the fire heat and height of my billy constantly, and dents were becoming a major problem.
I decided a change was needed, and opted for the zebra due to all of the praise on here. It was a good decision as it is a brilliant billy in all its sizes, but unless you are alone and don't mind small meals, leave the 10 cm behind and go larger!
This is the reason we all tend to have kit duplicated by one another somewhere in our kit lists, but I don't own a Lapplander saw, I think they are too highly priced for what they are and my 3 quid version is just as good and secures in the open and closed position aswell.