The full polish are probably Armstrong made. They look like it, Danaher, or now Apex I believe, other name brands seem mostly made in China now. Armstrong is 100% USA. I have two of the newer Cman ones with black lever. They seem to work fine enough for me, not sure if the lever is plastic, it looks like that, but may not be. I was poking at it and it seems pretty hard. If it is plastic it is doing the job. I wouldn't say they are garbage. If breaks I get a new one by driving to Sears, assuming Sears is around still.
I'm getting so many old ones I will never use them all up anyway.
At least someone in my own country is going to work in a factory, making them honestly, and they are being sold for an honest price.