Re: China ?
I suppose motors are a lot like many other items from China, fishing reels for example cover a wide range of quality from China, from total junk, to run of the mill, to fairly high end products. It all depends on how strict the buyer is about quality control. The downfall is their aptitude for counterfeiting. I've seen and been offered just about every name brand product which have either been made out of license by an OEM contracted source, or blatant forgeries. The problem is that the general public often can't tell the difference and blames the brand name for the junk item.
To some extent, at least in many cases, they are to blame in that they took their designs to China in the first place and simply lost control of the production numbers. For instance, a US company contracts a Chinese factory for 100,000 of a particular item built to their specs, in turn, the factory in China builds 200,000 plus, sells the initial order to the original company for the agreed price, and then sells the other 100,000 items to anyone that will pay for maybe half or less. The first 100,000 were checked and quality controlled buy the contracting company, the second 100,000 items were done as cheaply as possible to maximize profits. These make it to the US through internet and other sources and get sold for cheap, when the fail, they get returned to the original US company that made nothing on the inferior item in the first place. The original company has now lost control of their design, patents don't mean a thing in China, so now 10 companies are making the same item and pushing out quantity not quality, and the original companies name gets a bad rap for the Chinese products.
So far the worst or most blatant copies that I've seen have been Honda motors, so far I've only see small yard product engines but have heard that there are Honda Outboard clones there as well, which have made it to other shores but so far not to the USA that I know of.
What it boils down to is that yes, I'd buy a 25 to 40hp Chinese motor if the were like $400 or so, but for a few bucks less than a name brand, no way.
For $400, I'd deal with the issues and short comings in hopes of fixing and finessing the concerns myself. But at full price, with no real warranty, I'm not the least bit interested.