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Nowhere in the segment I quoted did you make any indication that you would choose the better product regardless who made or designed it. All you talked about was that you would choose an American designed/built product "when possible". Any rational reader would conclude that your "when possible" proviso meant that IF there was an American-made version, you would buy it, and if there wasn't, that you'd then buy foreign-made.
If by "when possible" you meant "when appropriate" or "when suitable", you should have said it.
The part about paying more for a US-made version remains unexplained. If you would pay more for a US version, presumably it would be because it is a "better" product. If there was no such increase in product quality, then why would you pay more for the US-made version?
There is really no consistent, unbiased, experienced or accurate source for comparative information for many consumer-grade durable goods. Beyond a simple spec-sheet describing the basic capabilities or features of a given product, consumers really have no way to know much about the intimate mechanical or structural details of most products and how those details will play out over the lifespan of the product.
For many types of consumer products that even have reviews, many times by the time the review is published, the product will be close to being replaced by next-years version.