> I won't buy a vintage leather jacket unless it has either a Talon or Serval zipper, for example.
You're might be correct on this front if the jacket is fron the mid-to-late 20th century - but as noted in the video today Talon is no more (it still technically exists but as a brand of an HK company). It's pretty much the same story: while YKK is definitely improving, a siginificant factor too is how (usually American) leading companies are cheapening their products because the brands are established (which won't affect in the short term but definitely adds up over the decades).