I don't know if I can add anything useful to your topic Sonyak. I too am looking for a ss cage and have narrowed it down to an Avian adventures or a Featherland.
I wanted to be able to use the cage without the grill so, from what I can tell from pictures the kings is out, as it looks like there is a big gap between where the grill would sit and the catch tray on all their ss models. (Unless anyone can tell me different
With the Avian Adventures and Featherland you can.
All three are med grade SS.
Catches/doorlocks. I don't know what they are like. But would like to know. And any other finer points, if anyone could oblige
You can see how they go together on the website. But not a lot of the finer detail. But it looks like all the panels are welded? Is it a stable solid feeling cage?
The Kings have a good reputation. And the top of the line have thicker bars than the economy line. Also the door locks are better, with the top range. (I assume you would get the best with the stainless!)
I got an Avian adventures ss cage last year, (I live in the uk)and sadly when it came it had rusty bars. I sent it back. When I mailed AA they were very nice, and apologetic, it seems they had a problem with their manufacturer. They have since then, changed to a new manufacturer. And so there should not be any problem now.
But the design was nice, and I still would buy one (if I could get one!)
It goes together and comes apart nice and easy. But if you need to lift the cage, the legs and panels are one piece, and could lift out of the base/shelf, and castor section. But fine if you only want to push. It was fairly sturdy, but not as solid feeling as a bolted together cage. It wobbled just a little when pushed, but it didn't feel unsafe. But I guess you have to compromise a bit for the convenience of a knockdown cage. The tray and grill can be switched around in the same runners. So if you don't use the grill there is a place to put it. And like the Featherland it has easy slot in/out seed catchers.
I can't remember how the side panels were, but the front and back have hollow square framing with the bars going through holes, not welded, so they turn. But the door has solid welded hinges, as did the feeder doors. And the same sprung bolt catch on all. You turn the knob on the bolt to loosen then you can pull it back. When closing the sprung bolt goes into the catch and you tighten the knob to lock. I wasn't sure I liked tose, but they do work quite well.
Sorry I don't know much about the Kings cages.
There are some posts on cages, if you do a search. But not enough detail for people like you and me who can't see them before we spend our hard earned currency.
I am in a simiar position to you Sonyak, except all the above cages are at least on your land mass
Are we all talking about Avian Adventures?
I didn't know they made a corner cage?
Edited to add. It may well be the difference in the grade/thickness of wire use, and how much welding there is on a cage.