Let me answer this, at least in part, from the 'Designer’s Perspective".
@Norman - "The folks who designed these products are no dummies. Were Bachmann USA and Aristo New Jersey simply victimized by the China factories?" In part, you are correct. Once the order is issued to the factory in China, you are somewhat at the mercy of the Chinese manufacturer. I learned this first hand in the '90s when company I worked for at the time ordered some welded fabrications from a Chinese manufacturer, and even with our inspector watching over the production on site in China, we still spent 20 - 40 hours on each weldment repairing them after receipt.
@HJ - See above.
@Andrew - You are far closer to the truth than you realize. The face China shows the world publicly are vastly different. Due to their political/industrial structure, consistency in product, even their own, is inconsistent at best. Keep in mind as well that, as I have been told (not first hand knowledge), there is only one factory producing hobby items, Kader. When there is a monopoly as this one manufacturer has, you can bet they will control the industry. As for QC, see above.
@David - For the most part, your post is pretty accurate, however … Every designer/engineer I know and have worked with for the last 40 or so years has always strived to produce the absolute best designs we know how to do. That being said, there are times that management, marketing, the bean counters step in and we end up trying to find a ‘less expensive’ option. Sometimes we are not provided ALL the necessary input to be able to put forth an optimum design. And yes, occasionally we even stub our toe and overlook some obvious ‘feature’.
I believe we as Americans have somewhat put ourselves in the pickle we are in. Most do NOT purchase VALUE. To most Americans, the bottom line is all that matters. I have been on the planer for 6 decades and as a child my father taught me that quality costs money. Buy quality and you will not be buying it over and over. I hear on this forum and others that the prices are too high. Are they? What would they be if every locomotive you purchased had all those quality components and flawless operation you speak of? How much would you pay to get that quality you ask for?
I suppose it depends on your budget. As an example, when I first returned to the hobby 6 or 7 years ago, my first purchase was a Bachmann K27. Why, because I fell in love with that locomotive back in '74 when I first entered the model railroading hobby. I paid $735.00 for it then, and was told I paid way too much. Since then I have purchased a Phoenix sound card (originally a PB9), Rodney’s gear box to fix the gearing issues, An Airwire R/C setup, and some serious batteries from Cordless Renovations. All the add ons I purchase added up to almost as much as I paid for the engine. Had I been required to drop that much cash on the K27 when I originally purchased it, I probably never would have purchased it, too much at one time. I would love to own an Accucraft … way out of my budget. And that is a perfect example of ‘Quality costs money’.
I will quit rambling now. …
Bob C.